Is error code 800c0008 on Windows 10 or Windows 11?
Error Code 800c0008 is common for all the Windows Operating systems when you try to install the updates. It usually appears when Windows 10 or Windows 7 update system is broken or there is network related glitches.
Usual causes for this Error Code 800c0008 are communication failure over the internet with Microsoft update servers.
Firstly, I will suggest you to do Windows Troubleshoot for Error Code 800c0008.
After that,
Disable the proxy internet connection and try again to install the update.