AVG Tune up may have corrupted my windows 8.1 update service

Hello Martin. I apologize for the inconvenience caused. I would request you to follow the instructions mentioned in this Microsoft support link: https://support.microsoft.com/en-us/kb/957310.

Result up till now : Nothing >> Searching fot updates but that's it

Since a while windows updates gives errors . I ask it on the microsoft  community and the said that tune up has done too much damage to windows giving me only errors on updates and so they won't be installed . It might also install windows 10 not.

Hello Martin. I apologize for the inconvenience caused. I would request you to follow the instructions mentioned in this Microsoft support link: https://support.microsoft.com/en-us/kb/957310.
Result up till now : Nothing >> Searching fot updates but that's it