Since today I’m the owner of a ASUS VivoTab RT and the first thing you have to do with any Windows system is updating and Windows RT is no exception. Everything went well until I tried to update Office 2013 RT to the final version. At this point the update process just stopped and gave an error code 5052.
Microsoft will give you some tips here (http://support.microsoft.com/kb/2748583) , but no luck for me.
Then I opened task manager and noticed the “Office Document Cache Handler” process. I killed it and then started the update again. Finally, and slowly, the update finished.