MaSSSoftech

the concept of DNS and, perhaps more importantly, how to manage it in an organization. We looked at a number of ways of keeping your thumb on DNS.

The first way we looked at was simply the Monitor tab of your DNS server properties dialog box. The main use of this tab is to perform some queries against your DNS servers. You can perform either recursive or iterative queries against your servers (remember those?)

The next tool we looked at was NSLOOKUP. NSLOOKUP is a command line tool and uses reverse lookup zones (remember those?) to lookup your name servers, hence the name. We discussed the various things you can do with NSLOOKUP, and instead of rehashing them here, check out this link to get more information.

The next tool we looked at was a powerful DNS tool called DNSLint. This tool is available from the Windows Support Tools and is used to do some advanced DNS troubleshooting. Depending in which options we use with the command, we can do various things. For example, running dnslint /d boston.contoso.com will test the boston.contoso.com domain to ensure that it has proper DNS connectivity. Again, TechNet has more information here.

Next up, we looked at the DNSCMD command, which can be used to directly manipulate the DNS database. If, for example, I want to insert a Host (A) record pointing traffic aimed at mailserver.contoso.com to 10.1.5.1 I would type in this from the command prompt:

dnscmd dnsserver.contoso.com /recordadd mailserver A 10.1.5.1

The last thing we discussed was Replication Monitor, which is launched simply by issuing the replmon command from the command prompt. This command allows us to ahem, monitor replication to discover any errors that might be happening.

Windows 7 includes a wealth of features that improve your productivity at work in addition to providing fun activities for you and your family to enjoy using your PC even more. But there might be a time when a problem might occur that you need to solve on your PC, whether its hardware or software related. Windows runs on over 1.2 billion configurations world-wide. That’s a lot of PC’s and its a testament to how well designed and sophisticated the Windows platform is, to make it work on the variety of setups that exist around the world. The Windows Team does its extreme best to make the Windows experience trouble free, but there is always a chance that something will go wrong from time to time. Not to worry though, because Windows 7 in particular introduces a set of easy to use solutions that can help you get out of a mix or suggest a quick fix. Today, I want to take a look at some of these tools in addition to the improvements that this major release of Windows introduces.

Windows Troubleshooter

Windows 7 includes a new trouble shooting utility called Windows Troubleshooting, which diagnoses and resolves common operating system, application and hardware issues by providing built-in troubleshooters for several different types of problems. Whether its power management, performance, programs, networking or printers just to name a few. Some troubleshooters that come with Windows 7 automatically run in the background on a scheduled basis. If they discover a problem they will let you know in the Action Center. Examples of such scheduled maintenance tasks include cleaning up temporary files, detecting hard disk errors, removing broken shortcuts, and ensuring the system time is correct. Lets take a look at utilizing Windows Troubleshooter. In this scenario, I am having some problems accessing a shared folder on another PC. To start the the Troubleshooter, click Start, type: Troubleshooter

Hit Enter


As you can see the Troubleshooting Control Panel list a collection of available Task that Windows users can use to diagnose common problems that you might be experiencing. Windows 7 includes a collection of 20 common Troubleshooting Task. The Action Center will notify you of new and updated troubleshooters when they’re made available online, as provided by Microsoft or your computer vendor.


My specific problem as indicated by the error in the Network explorer I am having a problem ‘accessing shared files and folders on other computers. Its exactly what I am looking for! Lets click it and see what its all about. As you can see below, a wizard is started, specifically designed to resolve problems related to Shared folders.




The wizard runs a quick diagnostics test then ask for some form of input if necessary, this will vary by Troubleshooter. In this case I am being asked for the Network path (location) that I need access to. Going back to Network Explorer, clicking in the Address Bar, the name reveals it is located within \HOME-DELLX86 while the name of the folder I need access to is ‘SharedDocs’ so, the path I should type in the Troubleshooter wizard is ‘\HOME-DELLX86\SharedDocs’, lets go ahead and do that.






Troubleshooting success!

After entering the necessary information, the wizard will run a series of test, attempting to correct the problem. The wizard will then ask you to close the Troubleshooter and check if the problem is corrected. If you are interested, you can monitor a history of all your troubleshooting activities. Users must note that, Windows Troubleshooting is not or never will be a complete answer, but it compliments the array of options available to Windows users when trying to solve a problem.

Compatibility

Compatibility is always a sensitive issue when it comes to a new version of Windows. Microsoft takes it very seriously and considers it a hallmark of the Windows platform, making it easy for users to transition to a new release with little or no hiccups. With the release of Windows XP, Microsoft introduced Compatibility Mode, which let older applications run on the OS emulating supported versions of Windows with the ability to save settings so that your applications will start in the correct mode every time. Compatibility Mode worked in some cases and others it did not.

Windows Vista’s compatibility story was a tough one, simply because of the fundamental changes that were made to enhance the system’s security foundations. In Windows 7, the Compatibility process is handled through a number of avenues, which include the Windows Upgrade Advisor and Application Compatibility Toolkit (ACT) to help customers assess application compatibility. Microsoft is tackling compatibility through shims, which avoids some of the problems that programs encounter when trying to function on a new version of Windows. Windows Vista affected compatibility through new improvements to its account privileges called Standard User Mode.

Because of the limitations of Standard User, applications that were designed to run with only Administrative privileges could not function properly under Vista, there is both a good and bad here, the good being malware could not easily infiltrate a system, but at the same time, the user would not be able to use a desired application effectively. With Shims, an application is prepared to run with Administrative privileges by making the application believe it has full rights while still in Standard Mode. Windows 7 provides a total of 6,999 shims for applications with more expected every patch Tuesday. Companies can create their own shims using the Windows Application Compatibility Toolkit recently updated to version 5.5, this helps with diagnosis of compatibility problems and the ability to apply the proper shims for troublesome programs. ACT also offers a shim that helps a custom application locate system files written in an unexpected directory as a result of different versions of the operating system.

One of the common ways to work around application compatibility problems in Windows 7, is to use the interactive right-click method and click the Run as administrator contextual menu option. To occasionally run an application with a full administrator access token, use the following procedure.

To perform this procedure, you must be logged on as a local administrator or provide the credentials of a member of the local Administrators group.

1. Locate the program icon or a shortcut in Windows Explorer
2. Right-click the program icon or shortcut, and then click Run as administrator.
3. When the UAC message is displayed, do one of the follow:

* If you are logged on as a standard user, or if UAC is configured to always require credentials, enter the appropriate administrative credentials, and then click OK.
* If you are logged on as an administrator and UAC is not configured to always require credentials, click Yes to start the application.

If the above does not provide a solution, you can utilize the Program Compatibility troubleshooter. If an older program does not run correctly, you can use it to simulate the behavior of earlier versions of Windows. Program Compatibility troubleshooter runs a quick diagnostic check which searches for a list of programs that you might be experiencing problems with. If you don’t see the program, you can click ‘Not Listed’, click next and browse your hard disk for the program. If your program is listed, select it and click Next. Program Compatibility will then suggest recommended options. Personally, I prefer choosing ‘compatibility settings based on problems you notice’. As I noted earlier, most application issues are often related to compatibility with the OS.




Windows will then ask you to check off any of the behaviors you are noticing when attempting to use the program. All may not apply and most often, choosing an earlier version of Windows that the program worked in can resolve the problem. For my scenario, I will select ‘The program worked in earlier versions of Windows but won’t install or run now’. Program Compatibility will then list versions of Windows that the program worked in. Select one and the Program Compatibility Troubleshooter will reconfigure the application to run the appropriate settings.




Preparing an incompatible application to work in Windows 7

Problem Steps Recorder


Problem Steps Recorder is used to capture application compatibility issues for evaluation by technical experts. It does this by automatically capturing the steps you take on a computer, including a text description of where you clicked and picture of the screen during each click. Once you capture these steps, you can save them to a file that can used by a support technician or an expert to resolve the problem you might be experiencing.

System Restore

Last year I did a CISCO IT Essentials course which prepared me for the CompTIA A+ exam. One of the things I discovered during my learning was how important System Restore is in the troubleshooting process for Technical Support staff. Microsoft first introduced System Restore with the release of Windows Millennium Edition in 2000. Since then the Windows Team has included it with new versions of Windows while improving the reliability of this essential utility. With Windows 7, there are some welcome improvements I want to take a quick look at.


System Restore provides an opportunity for users to restore their PC to an earlier time in case of a problem. Windows saves snapshots of the system in its current condition. By taking a snapshot before installing a program, you can correct the problem by rolling back your computer to a point in time when it was working well. The great thing about System Restore has always been the ability restore with confidence knowing that your personal files will not be altered or destroyed during the process. System Restore affects Windows system files, programs, and registry settings. It can also make changes to scripts, batch files, and other types of executables created under any user account on your PC.

In Windows 7, System Restore is more reliable, predictable, and effective. You’ll see a list of programs that will be removed or added, providing you with more information on which restore point to choose. System restore points are also available in your backups, giving you a larger list of restore points to choose from—and likely over a longer period of time. When combined with other features such as Previous Versions which are copies of files and folders that Windows automatically saves as part of a restore point Windows users can feel secure knowing their information is always protected by the OS.

Recently I took a look at the two other important troubleshooting features in Windows 7, Recovery Options, Backup and Remote Assistance.

Windows 7 includes advanced recovery options that can guide you through the ‘reinstallation of Windows’ and restoration of personal files and settings. This will require that you have an available Windows 7 installation disc or Recovery Image, which will assist with the reinstallation. You will have to restore your files from a backup, programs must also be reinstalled. Most OEM’s (Original Equipment Manufacturers) such as HP, Lenovo and Dell install a hard drive partition customized with additional tools such as a separate system recovery tool for restoring the computer back to its original state. Advanced Recovery also includes the option to backup files before starting this procedure. You can find the Advanced Recovery option in Control Panel > Action Center > Recovery > Advanced recovery methods. Read the entire article here

Windows 7 backup and restore features are designed to make protecting your data and system easier. The combined file and system backup wizard delivers a simplified configuration experience, and the folder selectivity functionality for file backup provides users greater control over their backup content. Managing backup is easier with the new space management user interface and integration with Action Center. Recovering your system is made easier with simplified interface and better guidance for choosing a recovery method. Read the entire article here

Remote Assistance in Windows 7 introduces a new feature called ‘Easy Connect’ which simplifies the process of connecting to another PC remotely with only a password, no file needed. When a connection is established between both computers, contact files are exchanged which creates a trust relationship. This further simplifies future connections that are made without the need for a password. Read the entire article here

Conclusion

Windows 7 makes troubleshooting a worry free process that emphasizes strong confidence when using your PC, protecting your precious memories and critical data. For beginner’s and experts, the operating system covers a wide range of problem solving capabilities that can assist you in the event of a problem. If you ever encounter an issue, just know that Windows 7 got your back! :)

I had a couple of very enlightening conversations with representatives from Microsoft and Google back-to-back on Friday. While our conversations were focused on their educational initiatives, some of which I’ll be featuring tomorrow on ZDNet Education, the more interesting aspects of the interviews actually related to their entirely different approaches to the Web, the cloud, and computing in general. These approaches, and the history behind them, beg the question, is it time for Microsoft to reinvent itself if it wants to avoid becoming the computing equivalent of fossil fuels?


I know, the La Brea Tar Pits don't actually contain any dinosaurs...but is it time for a shift in strategy for Microsoft?

Microsoft has been around for a while. It was founded in 1975, the year before I was born, making it truly ancient in computer years. This isn’t a bad thing, in and of itself. Experience counts for a lot and, if Windows 7, Windows Server 2008, and Office 2007 (with 2010 on its way) show us anything, it’s that Microsoft has learned a lot of lessons and can crank out some pretty impressive desktop productivity software. True, Server 2008 isn’t desktop software (unless you count what it can do in terms of Terminal Services and desktop virtualization), but Active Directory and much of its software stack directly support desktop computing environments.

Google, on the other hand, is a relative baby. Founded in 1998, the company was created for, by, and through the Web. As Google’s Jeff Keltner told me the other day, the company has built an entire Web-based infrastructure throughout the company. They have a “single way” of thinking about how they do business with a single “back-end and front-end model” that they leverage both internally and externally in the variety of products that grew from their original search business.

If you talk to the folks at Google, Microsoft is shoehorning a dying desktop-centric strategy into a Web-enabled world. Talk to the folks at Microsoft and Google is shoving cloud strategies down the throats of enterprise customers who need far more control than Google Apps can offer.

So who’s right? And more importantly, who’s right long-term? Right now, it seems clear that they both are. Microsoft has a robust, mature software ecosystem that can manage an enterprise’s desktop experiences quite handily. Increasingly, with Live Web Apps, Sharepoint Live, Outlook Live, etc., users can access their documents and messaging in very familiar forms from the Web. The best of both worlds, right?

But what if the desktop really is dead? What if the desktop computing experience will be irrelevant in a year? Two years? What if Google is right? Google doesn’t need an ecosystem of integrated products that also integrate with the cloud because all of its services were built from the ground up to work in the cloud. The desktop was not part of Google’s core strategy; they’re simply able to leverage their massive Web presence and huge data center capabilities to potentially eliminate the need for a desktop for many users. In fact, again according to Keltner, Google now focuses in terms of Apps on how best to satisfy the needs of their customers, rather than replicating what Microsoft can do.

Many of these questions have been asked before:

* Is the desktop dead?
* Is the OS dead?
* Is Microsoft a dinosaur?
* How many of your users really need Office in all its glory?
* Can the cloud actually work for the enterprise?

Now, though, as Microsoft pushes hard to keep up in the cloud and maintain its desktop advantage, while Google begins to look like the 1000 pound gorilla taking over the Internet, it seems as though the game might be changing. I think that it’s premature to assume that Microsoft will follow the dinosaurs into extinction. Not only did the dinosaurs dominate the earth for millions of years before mammals pulled a slick bit of Darwinism, but as any 2nd-grader will tell you (mine most definitely included), dinosaurs are super cool. So are many of Microsoft’s current products.

However (and this is a really big however), Google’s products are maturing at an incredible pace, perhaps because they eat their own dogfood and run their own enterprise on Google technologies. Here’s the real question you have to ask yourself: Is it worth investing in a Microsoft ecosystem now? Or does Microsoft need to fundamentally shift directions if it hopes to keep attracting new customers in a world that is increasingly turning to the Web for everything it does?

All of Microsoft’s Live offerings are a compelling start. My money isn’t on either Microsoft or Google; it’s on the Web and the company who can leverage web technologies in the way that is most meaningful to users. Right now, the advantage seems to be going to Google, but this is hardly over. Microsoft, as well as plenty of other cloud players like IBM and Amazon will not be conceding any time soon.

When hard drives fail and blue screens abound, students with a myNotebook laptop have sought out the support services of Information Technology. But most students at the College of William and Mary have no knowledge of what goes on behind the scenes in the basement of Jones Hall.

The College’s IT department maintains the campus computer labs, phone system, myWM, Banner and the e-mail servers.

Usually students only encounter the public face of the department when two student employees at the front desk attempt to diagnose a computer’s problem and repair it on the spot.

“Some things you’re replacing right here while you wait, so we do some keyboards, CD drives, AC adapters, hard drives,” Manager of Technology Support Center Brian Persinger said.

Of all of the computers brought to IT, around 20 percent of them are repaired at the front desk, within fifteen minutes. But if the damage is more serious, the computer is checked in and brought to the back room where staff technicians dismantle the computer to replace broken parts.

“Spills are a pain,” Technology Support Engineer Danny Clouser said. “I had one yesterday where I had to replace eight or 10 parts because somebody dumped a coke on it.”

The technicians can draw from numerous drawers filled with the parts for each computer model in the
myNotebook program.

“The way it works is that [the manufacturers] give us one computer for every 100 computers sold and we take that one computer and break it down into parts,” Persinger said.

Once the broken parts are replaced in a student’s laptop, the broken pieces are sent to the manufacturer, who then restocks the parts assembly in IT’s back room. When the computer is fixed, it heads to the front desk for the student to pickup.

Computers are usually returned within a day, with three days as the maximum. If a computer has multiple parts failures, the technicians will sometimes, reluctantly, send the computer back to the manufacturer for repair or replacement of the unit.

“We always want to get the computer back in the student’s hands as quickly as possible so they can do their schoolwork,” Persinger said.

Persinger said that IT has recently changed its support policy to stop backup and data retrieval for myNotebook computers because a single hard drive would take the staff hours to backup.

“Our turn-around time was always around three days, but we wanted that to be our maximum, not our norm,” he said. “So we decided to make some changes which was getting some repairs done up front and eliminating us being responsible for helping users restore data.”

Technicians will not only repair any myNotebook computer, but also will attempt to fix any student, staff and faculty Lenovo or Dell computer that has an active hardware warranty.

Though they are not directly involved, the department also provides consulting to the Tribe Apple Center in the ID Office.

The myNotebook program, established five years ago, was designed to have a consistent hardware in the student populace.

“It would have given the professors much more flexibility to incorporate technology into their teaching because everybody had [the same computer],” Chris Ward, Director of Systems and Support said. “But that didn’t work.”

The idea never truly took off as diversity in campus computers has increased over the years.
myNotebook laptops have declined in popularity, and now constitute only 50 percent of College’s computers, down from 80 percent five years ago.

IT strongly recommends that all students back up their hard drive. Ward said that one professor had to learn that the hard way when she paid $1,000 dollars to an outside company to extract her book off a failed hard drive.

“We have a tech that always says there are two kinds of people,” Ward said. “There are those who have lost data and those who will lose data. So back-up your data.”

Internet Explorer 7 (IE7) is light years ahead of its predecessors, but by no means does that proclamation mean that the browser is perfect. You are still going to encounter issues with IE from time to time.

Here are some of the concise guides that deliver some troubleshooting steps that will clear up the majority of issues we encountered with IE7.

Issues with Internet Explorer 7.0 with solutions

Problem: Crashes or hangs

If IE crashes, the most likely problem is that there's a buggy add-on (Toolbar or Browser Helper Object). In order to verify and isolate the buggy add-on, follow these steps:

1. Start IE in No Add-ons mode, either by right-clicking the Desktop icon, or clicking START - RUN and typing: iexplore.exe -extoff

2. Determine if IE fails.

3. If not, use Tools - Manage Add-ons to disable all browser extensions and toolbars.

4. Restart IE and re-enable browser extensions one-by-one.

5. Once you've found a broken extension, contact the manufacturer and ask for an update.

(Reference: http://support.microsoft.com/?id=928426)

If IE still crashes often, even when browser add-ons are disabled:

• Please ensure that you are running the very latest version of your anti-virus, anti-malware, and/or firewall programs.

• Please ensure that the drivers for your graphics card are up to date.

• If you have Google Desktop installed, please ensure that you update to the latest version of Google Desktop.

• If you have 7-Zip or other Windows Explorer extensions installed, please ensure that you update to the latest.

Problem: Cannot connect to Internet using IE after updates installed

If you see the "Page Cannot be Displayed" error after installing Internet Explorer updates from Windows Updates, it's possible that you have a 3rd party firewall installed that is blocking access because the IE files have been updated. Please see http://support.microsoft.com/kb/942818/en-us for more information.

Problem: IE always starts in "No Add-ons" mode

The problem is that you're launching Internet Explorer using a shortcut icon that has the "-extoff" command line parameter. That parameter causes IE to start without add-ons. Thus, every time you use that shortcut icon, IE will start in No Add-ons Mode.

1. How do you normally start Internet Explorer? Right-click whatever icon you're using to start IE, choose "Properties" and remove the -extoff part of the shortcut.

2. If you click the green START button, click Run, type iexplore.exe in the RUN box, then hit the ENTER key, IE will start with Addons enabled.

Problem: IE opens small windows

IE opens new windows at the size of the last closed window. If you find that IE is opening small windows, do this:

• Close all IE windows.
• Open one new IE window.
• Adjust that window to the size you prefer. Do this by dragging the window borders. Do not use the maximize button:
• Close the IE window.
• New IE windows will open at the size you chose.

Problem: ClearType Text appears fuzzy

IE7 turns on a text-smoothing technology called "ClearType" by default. ClearType is scientifically proven to make text easier to read, particularly on LCD flat panel monitors.

If ClearType looks fuzzy on your monitor, you might want to try the ClearType tuning wizard, which can help you adjust the display of ClearType.

If you still don't like the appearance of ClearType, you can turn it off by unchecking the checkbox: Tools - Internet Options - Advanced - Multimedia - Always use ClearType for HTML.

Problem: IE Startup takes a long time (>3 seconds)

1. IE may start very slowly if you have a huge number of sites listed in your Restricted or Trusted sites zone. Some tools, like "SpyBot Search & Destroy" will place thousands of sites in these zones if you use their "immunize" feature.

2. Follow the "Crashing on startup" steps above to see if starting in No Add-ons mode starts much faster

3. If you're not using a proxy, uncheck IE's "Automatically detect settings" option on the Tools - Internet Options - Connections - LAN Settings dialog.

Problem: Slow Page rendering

1. Increase the connection limit. This tweak allows IE to make up to 16 connections per server.

2. Ensure that both "HTTP1.1" checkboxes in Tools - Internet Options - Advanced are checked.

Problem: IE7 Setup fails to install Internet Explorer

See http://support.microsoft.com/kb/917925

Problem: My address bar won't turn green?

IE7 includes a cool new feature that turns the address bar green when a secure site presents an Extended Validation certificate:

If you're having trouble with this feature, on a site you know has an EV certificate:

1. Ensure that you either have the Phishing Filter set to "Automatic" mode or Tools > Internet Options > Advanced > Security > Check for Server Certificate revocation checked.

2. If that doesn't work, install this: Windows Root Certificate Update and restart.

Problem: After installing, IE7 starts then vanishes

It's possible that one of IE's DLLs isn't installed correctly

1. Click START - RUN and type cmd
2. In the command prompt, type cd\
3. In the command prompt, type cd Program Files
4. In the command prompt, type cd Internet Explorer
5. In the command prompt, type regsvr32 IEPROXY.DLL

(Reference: http://support.microsoft.com/?id=928427)

Problem: Error message about PSAPI.DLL

If you install IE7 and the following error message begins to show:

The procedure entry point GetProcessImageFileNameW could not be located in the dynamic link library PSAPI.DLL

1. Search your hard disk for PSAPI.dll.

2. Any copies of this DLL that are found outside of the Windows or Windows\System32 folder should be renamed to PSAPI.bak.

Problem: IE always goes to http://runonce.msn.com/runonce2.aspx instead of my homepage

If IE7 always goes to the RunOnce page on startup, even after you've tried to save the first run settings, it's possible that the mechanism that IE is using to save the settings does not work for some reason.

You can prevent IE from going to the RunOnce page and cause it to go directly to your homepage by running this script.

For more info, check out this Knowledge Base article.]

Problem: IE always goes to http://www.microsoft.com/windows/downloads/ie/getitnow.mspx instead of my homepage

If Internet Explorer always goes to this page on startup, it's likely that you have an anti-spyware package (like "SpyBot") that prevented IE from correctly modifying your registry.

Try running this script. Note: you may need to disable your anti-spyware tool temporarily for the script to work.

Problem: On startup, IE always shows an error message about the AOL toolbar

If you see the following error message every time IE starts:

"Cannot find 'file:///C:/Program%20Files/AOL%20Toolbar/welcome.html'. Make sure the path or Internet address is correct."

..then you've hit a bug in the AOL Toolbar.

Try running this script. Note: you may need to disable your anti-spyware tool temporarily for the script to work.

Problem: I installed a "branded" version of IE7, but I'd prefer a "plain" copy without toolbars and customizations.

An article on this topic can be found here: How to remove branding in Internet Explorer 7.

Problem: Malware / Adware

If Internet Explorer is behaving strangely (crashing, visiting unwanted sites, etc), it's possible that there is malicious software installed on your computer.

As a first step, you should allow your antivirus software to scan and attempt to repair your computer. Additionally, you may want to try the following Microsoft tools:

• Windows Defender
• Windows Live OneCare
• Windows Live Safety Center
• Malicious Software Removal Tool

You should also ensure your computer has all the security updates available at Microsoft Update.

Problem: My searches are redirected to unrelated sites and I cannot connect to WindowsUpdate or antivirus websites

If Internet Explorer searches are redirected to unrelated sites or search engines, it's possible that your computer was infected with malware (see the previous tip). However, if your computer is not currently infected with malware, it's possible that at some time in the past, malicious software altered your computer's DNS settings. DNS works like an "internet phonebook" that maps URLs (like "windowsupdate.microsoft.com") to internet protocol addresses (like "207.46.225.221").

To determine if a malicious DNS server is configured:

- Go to Start -> Control Panel ->Network Connections.

- Right click your default connection, usually Local Area Connection or Dial-up Connection, if you are using Dial-up, and left click on Properties.

- Double-click on the Internet Protocol (TCP/IP) item

Check to see if you're set to something other than "Obtain DNS servers automatically". If so, contact your ISP to ensure that the address specified is correct, or set the "Obtain DNS servers automatically" checkbox. Then restart your computer.

Problem: After opening many tabs, Windows and IE paint abnormally.

See http://blogs.msdn.com/tonyschr/archive/2005/05/25/desktop-heap-limitations.aspx

Problem: A remote user is having networking problems with Internet Explorer. How can I collect information about his system to help me to troubleshoot?

Have the user run Netcheck and send you the log file.

Problem: Overlong headers result in HTTP/4xx or HTTP/5xx errors, particularly on devices like routers or webcams

Problems of this nature are usually caused by one of the two request headers in yellow being longer than the device expects.

GET / HTTP/1.1

Accept: image/gif, image/jpeg, image/pjpeg, application/x-ms-application, application/vnd.ms-xpsdocument, application/xaml+xml, application/x-ms-xbap, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-shockwave-flash, application/x-silverlight, application/x-silverlight-2-b2, */*

Accept-Language: en-us

User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; WOW64; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 1.1.4322; InfoPath.2; .NET CLR 3.5.30729; .NET CLR 3.0.30618; OfficeLiveConnector.1.3; OfficeLivePatch.1.3; MS-RTC LM 8)

Accept-Encoding: gzip, deflate

Connection: Keep-Alive

Host: 192.168.10.1

These headers are dynamically generated out of registry keys. They can usually be trimmed by editing the registry without any important side-effects.

To trim the list in the Accept header, click START > RUN > REGEDIT.EXE. Using RegEdit, navigate to:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Accepted Documents

..and remove elements from the "Name/Type/Value" list to remove values that aren't strictly required. Elements in red are of lower importance than those in black:

image/gif, image/jpeg, image/pjpeg, application/x-ms-application, application/vnd.ms-xpsdocument, application/xaml+xml, application/x-ms-xbap, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-shockwave-flash, application/x-silverlight, application/x-silverlight-2-b2, */*

A similar problem can occur with the User-Agent header.

To trim the list in the User-Agent header, click START > RUN > REGEDIT.EXE. Using RegEdit, navigate to:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\User Agent\Post Platform

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent\Post Platform

..and remove elements from the "Name/Type/Value" list to remove values that aren't strictly required. Elements in red are of lower importance than those in black:

User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; WOW64; Trident/4.0; SLCC1; .NET CLR 2.0.50727; .NET CLR 1.1.4322; InfoPath.2; .NET CLR 3.0.30618; .NET CLR 3.5.30729; OfficeLiveConnector.1.3; OfficeLivePatch.1.3; MS-RTC LM 8)