How to fix Windows Update Error 0x80070643 in Windows 10 or Windows 11 {Three Solutions}

You can fix Windows Update Error 0x80070643 in Windows 10 or Windows 11 easily by these three methods.
Method 1: Command Prompt - right click and run as administrator. Type the following command and hit the enter key
dism /online /cleanup-image /restorehealth

Method 2: Right click on the start button - terminal admin - copy the following commands

net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
net start wuauserv
net start cryptSvc
net start bits
net start msiserver

right click to paste. The commands will execute one by one. Type Y to confirm if asked. Hit the enter key to run the last command.

The first four commands stop four windows services to rename two folders without any error.
a- Windows Update Service
b- Cryptographic service
c- Background Intelligent Transfer service
d- windows installer service

The next two commands renames two folders
a- Software Distribution folder from Drive C - Windows
b- catroot2 folder from Drive C - Windows - System32 folder.

The last four commands starts those halted services above.

Method 3: Update with Windows ISO file without USB or DVD. Search Windows 10/11 iso (The OS should match your current OS). Select the language. Language also should match your current system language. Download the ISO file. The download will take some time. Open the file. Run the Setup file inside it! It'll keep your apps and files.

Hope this helps! The last method is worth the effort as this will repair your computer for sure.
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