Server: WSUS uninstallation

To uninstall (remove) the Windows Update Services (WSUS) you should navigate to the Control Panel and simply remove it. In the first step you have 3 options, select everything and follow the wizard.

Sometimes this is not enough, you cannot delete the database and you have to manually remove the WSUS. To do that please follow the steps bellow:

1. Download the Windows Installer Cleanup Utility and run msicuu2.exe

2. Once it is installed go to Start | All Programs | Windows Install Clean Up

3. Scroll through the options and highlight Microsoft Windows Server Update Services 3.0 SP1 and click remove

4. Open a command prompt and run the following commands:

net stop wsusservice

net stop wsuscertserver

sc delete wsusservice

sc delete wsuscertserver

5. When complete, go back to the Windows Installer Cleanup Utility and highlight Windows Internal Database (MICROSOFT##SSEE) and click remove.

6. Go back to the command line and run the following commands

net stop mssql$microsoft##ssee

sc delete mssql$microsoft##ssee

7. Delete or edit the associated reg keys as noted below:

a. Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server and edit the "InstalledInstances" value and remove "MICROSOFT##SSEE"

b. Remove the "MICROSOFT##SSEE" subkey under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server

c. Remove the "MSSQL.2005" subkey under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server

d. Rename the following folder:

\%Windir%\SYSMSI\SSEE\MSSQL.2005\MSSQL\Data

to

\%Windir%\SYSMSI\SSEE\MSSQL.2005\MSSQL\Data.old

Done!!!

WARNING: Do Not Do This if you are running WSUS on SBS 2008!  SBS 2008 installs Sharepoint and WSUS on the same server and both applications store their database in Windows Internal Database. Removing Windows Internal Database (MICROSOFT##SSEE) using steps 6-8 will break Sharepoint and anything else you may have installed that relies on Windows Internal Database.