How To remove WSUS Manually

1. Download the SDK to obtain MSIZAP
To obtain the Windows Server 2003 SP1 Platform SDK, visit the following Microsoft Web site:
http://www.microsoft.com/downloads/details.aspx?FamilyId=A55B6B43-E24F-4EA3-A93E-40C0EC4F68E5
2. From a command prompt, type:
For WSUS 2.0: MSIZAP T { A0D46DC6-8950-451A-8990-53C86E17666E}
For WSUS 3.0: MSIZAP T {2C0D7E35-EE6E-4DC7-BA13-2C68AEDEB59D}
3. From a command prompt, type: sc delete wsusservice
4. Again, From a command prompt, type: MSIZAP T {2C0D7E35-EE6E-4DC7-BA13-2C68AEDEB59D}
5. Run following command to ensure the Windows internal database is removed.
On 32-bit platforms: msiexec /x {CEB5780F-1A70-44A9-850F-DE6C4F6AA8FB} callerid=ocsetup.exe
On 64-bit platforms: msiexec /x {BDD79957-5801-4A2D-B09E-852E7FA64D01} callerid=ocsetup.exe
6. Reboot the server.
7. From a command prompt, type: aspnet_regiis –i
8. From a command prompt, type: iisreset