How To : Stop Windows Update Looping or Stuck

  Windows

Boot Windows server into Safe Mode

Stop following services via CMD (Command Prompt)

Net stop Wuauserv
Net stop cryptsvc
Net stop bits

Rename follow windows update folders via CMD (Command Prompt)

ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 Catroot2.old

After done rename folders, start back the follow services via CMD (Command Prompt)

Net start Wuauserv
Net start cryptsvc
Net start bits

Restart and boot to normal Windows mode

Done!