For a while now (several months) I am having trouble installing windows updates. An example:

Error Code 800F0922 when installing a safetyupdate (KB2736693) for Microsoft.NET framework 3.5 on windows 8 and windows server 2012 for x64-systems.
But then when installing a different safetyupdate (KB2742616) it doesn't give me an error.
I also get error configuring updates from time to time after I update while restarting or shutting down.

I think the problem has something to do with writing permissions, because I can't install microsoft office 2010 either. When trying to install microsoft office it only installs it partially, after which it says that I don't have the privileges to write something to my E drive.

Any help would be appreciated!