How to install Service Pack 1 on Windows 7 x64?

Question

Windows

Actually, the problem is that when you try to start the installation, you constantly get an error:

Compatibility check package for SP1 installed (KB947821).
Ran the Windows Update Service Checker. Gives a trace. Result:

Errors fixed by the Update Service Repair tool.
All the same, no new updates come, and the manually downloaded SP1 refuses to install.

Answer 1

Oh my god, who would have thought!
It was necessary to delete the branch in the registry HKEY_LOCAL_MACHINE\SOFTWARE\vLite.
Take note of who has a problem.