Re-installing Windows Update Agent (WUA)

Whilst troubleshooting Automatic Update Client, sometimes you might want to re-install Windows Update Agent (WUA). But, if Windows Update AutoUpdate Engine is already updated to version 5.8.0.2469 then, you will see the following message;

"Install is not needed since windows update agent is already installed."

To force the install, download WindowsUpdateAgent20-x86.exe and run the following command;

"WindowsUpdateAgent20-x86.exe /wuforce"

  • To install WindowsUpdateAgent20-x86.exe silently run the following command; "WindowsUpdateAgent20-x86.exe /wuforce /quiet"
  • To install WindowsUpdateAgent20-x86.exe silently without restart, run the following command; "WindowsUpdateAgent20-x86.exe /wuforce /quiet /norestart"

MORE INFORMATION

For x86-based computers (WindowsUpdateAgent20-x86.exe)
http://go.microsoft.com/fwlink/?LinkId=43264

For x64-based computers (WindowsUpdateAgent20-x64.exe)
http://go.microsoft.com/fwlink/?LinkId=43265

VBScript to check if the new AU Client (WUA) is needed and installing it accordingly
http://msmvps.com/blogs/athif/archive/2006/05/17/95463.aspx

Automatic Update Client Versions History
http://msmvps.com/blogs/athif/archive/2005/06/15/Automatic_Update_Client_Versions_History.aspx

Published Wednesday, April 05, 2006 10:17 AM by Athif
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Wednesday, May 17, 2006 9:21 AM by PatchAholic...The WSUS Blog!

# VBScript to check if the new AU Client (WUA) is needed and installing it accordingly

VBScript to check if the new AU Client (WUA) is needed using IWindowsUpdateAgentInfo::GetInfo method instead of checking the version of the file wuaueng.dll.