This tutorial will teach you how to repair windows update error code 0x80070643.
Windows Defender Error 0x80070643 Solution. How to Solve Windows Update Fails to Install
Error 0x80070643.
Type the following commands:
net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 catroot2.old
net start wuauserv
net start cryptSvc
net start bits
net start msiserver
