Updates failures

Hey guys,
I have been trying to update Windows Vista for last many times and all the times it has been failing, giving me following errors. I have tried searching through web but did not find anything.

Here are the codes, please let me know if there is something you can guide me over this error codes:

error codes: Code 652, Code 60070621, Code 8007050

1.Uninstall all 3p security software
2.Try reregister WU components in aggressive mode How do I reset Windows Update components?
3.Try reregister WU libraries Repair & Fix Windows Updates with Fix WU Utility | The Windows Club