Category Archives: Windows

Run IIS in 32-bit mode on a 64 bit machine

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To configure ASP.NET to run in 32 bit mode on a 64 bit server.

On IIS6, open a command prompt and type following command and press ENTER.

cscript //nologo %SYSTEMDRIVE%\InetPub\AdminScripts\adsutil.vbs set w3svc/AppPools/Enable32bitAppOnWin64 1

On IIS7/7.5, open a command prompt and type following command and press ENTER.

apppool /apppool.name:MyAppPool32bit /enable32BitAppOnWin64:true

You can set the same in IIS 7 Manager UI by opening the ‘Advanced Settings’ for the app pool and change Change the Enable 32-bit Applications to True

Enable 32 bit applications in IIS 7

How Can I Uninstall IE9

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IE9 Uninstalling is done via Windows Update control panel.  Select the view installed updates and then uninstall IE9 via the context menu.

If you want to uninstall IE9 just because of degraded performance when viewing websites, you can try to turn off GPU rendering which might workaround the performance issue.

  1. In Internet Options, select the Advanced tab,
  2. Under Accelerated graphics, check the Use software rendering instead of GPU rendering checkbox.
  3. Click Apply then OK.
  4. Restart IE9

Continue reading →

Hyper-V VM Slow on Windows Server 2008 R2

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I recently upgraded my virtual machine hosting server from Window Server 2008 to Windows Server 2008 R2. There are some noticeable performance drop, especially on virtual machines that handles big log files, the automation script execution time can take 200% or more than it was in a VMHOST with Windows Server 2008.

I have done some testing and the performance downgrade seem introduced by the new power management system in windows server 2008 R2. There are 3 build in power plan in Windows Server 2008 R2

  • Balanced (recommended)
  • High Performance
  • Power Saver

The default power plan in Windows Server 2008 R2 is Balanced. After I change Power Plan to High Performance and the performance downgrade issue does no occur any more. My guess is when power plan is set to balance, applications might not full utilize all available hardware resources.

You can also checkout this post for Set the power configuration to High Performance in scripts.

Windows Server Features or Role Services required by this product are not enabled

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When you install Office Web Apps on windows 7 that has Sharepoint 2010, you will see following error message

Setup is unable to proceed due to the following error(s):
Windows Server Features or Role Services required by this product are not enabled.
For a complete list, refer to the link below. For the list of pre-requisites needed to install the product please refer to:
http://go.microsoft.com/fwlink/?LinkId=106209
Correct the issue(s) listed above and re-run setup.
You can install all required prerequisites for this product by selecting the ‘Install software prerequisites’ option in the splash screen. See Help for more information.

Resolution

This is because Office Web Apps can only be installed on a server operation system.  Office Web Apps can only be installed on Windows 2008 Server x64 SP2 or R2 now. Also keep in mind Office Web App can only be installed after SharePoint Foundation 2010 or SharePoint server 2010 is installed.

Install PowerShell From Command Line

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To install PowerShell on Windows Server 2008 R2 or Hyper-V Server 2008 R2, following features needs to be installed.

  1. NetFx2-ServerCore
  2. NetFx3-ServerCore
  3. MicrosoftWindowsPowerShell

Because Powershell is built on DotNet framework, DotNet 2.0 and 3.5  has to be installed prior to PowerShell installation.

To install PowerShell from command line, run following from elevated command prompt

DISM.exe /online /enable-feature /featurename:NetFx2-ServerCore DISM.exe /online /enable-feature /featurename:NetFx3-ServerCore DISM.exe /online /enable-feature /featurename:MicrosoftWindowsPowerShell

Or run following command if it’s an 64bit machine

DISM.exe /online /enable-feature /featurename:NetFx2-ServerCore-WOW64 
DISM.exe /online /enable-feature /featurename:NetFx3-ServerCore-WOW64 
DISM.exe /online /enable-feature /featurename:MicrosoftWindowsPowerShell-WOW64 

Windows Live Essentials Setup fails

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When setting up Windows Live Essentials, the setup installer might fail with one of following error code.

0×80070643

Solution: See Error 0×80070643 When Install Windows Live Essentials

0×80040609

Solution: Turn on Windows Firewall

0x8104000b Source WaitForCatalog

Solution:

Windows Live Essentials Beta is released

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Windows Live Essentials Beta is released

Today Microsoft announces releasing the Windows Live Essentials Beta, which include new versions of Messenger, Photo Gallery, Movie Maker, Sync, Live Writer and more   You can download it from http://explore.live.com/windows-live-essentials-beta.  You can read more about the new features here or watch the video. I also had a post for Windows Live Writer 4 new features, check it out. Continue reading →

WordPress 3.0 Cannot Export

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WordPress 3.0 is finally released with some great new features.

I just upgraded my site to 3.0 today. The upgrade was smooth, however, I find that export doesn’t work any more. When I try to push export button to download posts xml file locally, I get following error.

Warning: Illegal offset type in isset or empty in /home/content/22/5401722/html/wp-includes/taxonomy.php on line 176
Warning: Cannot modify header information – headers already sent by (output started at /home/content/22/5401722/html/wp-includes/taxonomy.php:176) in /home/content/22/5401722/html/wp-admin/includes/export.php on line44
Warning: Cannot modify header information – headers already sent by (output started at /home/content/22/5401722/html/wp-includes/taxonomy.php:176) in /home/content/22/5401722/html/wp-admin/includes/export.php on line45
Warning: Cannot modify header information – headers already sent by (output started at /home/content/22/5401722/html/wp-includes/taxonomy.php:176) in /home/content/22/5401722/html/wp-admin/includes/export.php on line46

WordPress FAQ suggests checking spaces in wp-config.php and remove blank spaces before <?php tag or after ?> tag, I try and it does not help.

After trying deactivate on every single plug-in, I figure out it’s the plug-in Simple Tags that breaks WordPress 3.0 new export feature. Before Simple Tags owner releasing a fix, you can temp workaround this issue by deactivating Simple Tags plugin. After that, you will be able to get exported xml file to save.

Windows could not connect to the System Event Notification Service

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If you see Windows could not connect to the System Event Notification Service error on VISTA, Windows server 2008, or Windows 7, you can try follow these steps to get it resolved.

  1. Click Start, click All Programs, and then click Accessories.
  2. Right-click on the Command Prompt and then select Run as Administrator.
  3. Once the Command Prompt has opened, type following command and then press ENTER.

    netsh winsock reset

  4. Close the Command Prompt and restart the machine.