That wicked word "WSUS" - Installation/Uninstallation tragedies

My Guide to WSUS.... after wasted hours getting it up or removing it....

Installation Issues

WSUS install on Server 2008 R2 - Installation failed the update could not be found there may be a network connection issue.

1. Remove WSUS from the GP

Checking if WSUS being pushed out via the GP

regedit - Local Machine/Software/Policies/Microsoft/Windows/WindowsUpdate
Check WSUServer entry

2. run gpupdate /force

3. Make sure there isn't a WSUS server running anywhere else.

REMOVAL issues

Fatal Error 0x80070643 when trying to run uninstall

1. Use windows uninstaller to remove.
2. From Command prompt: net stop wsusservice, net stop wsuscertserver
3. From Command Prompt: sc delete wsusservice, sc delete wsuscertserver
4. Uninstall IIS & WSUS 
5. Reboot