I'm not using Office 365 but the actual Office 2013 which I acquired through the free upgrade path offered by MS some time ago.
A strange issue has happened twice now, but always resolved but it was quite disturbing as I've been using Office 2013 since it was released.
Issue in detail: I tried to open up outlook 2013 to check my emails which I get a lot of. But upon open it, I get a message on screen stating office can't be opened then a dialog box opens asking if I want to fix the issue(s) from local files without internet connection -or- repair it from the internet. My best guess was to allow it to fix from the internet unless there were missing or damaged files that could be ultimately culled back from the internet repair. It all.. I could say it took 10-15 minutes to repair and it runs fine now. It even made me resign in to my account which was odd.
possibilities: My system did have an update on the recent Tuesday patch release or update.. whatever you call it but I think it "might" have been possible due to the update.. but no conclusive evidences to this. (I'm shooting from the hip on this one)
conclusion: I enjoy office 2013 and it is pretty snappy in terms of fast opening and ease of use, I'm just a bit dismayed at this because it seemed to be a REALLY big issue in it took a long time to get fixed, although it got fixed very quickly. I am glad however, this feature exists and it works quite well.
Has anyone else experienced this issue as well?
Added: system stats: Toshiba P775D-S7144 running Windows 8.1.
I did have a recent update that was implemented on the system either this week or before. matter of fact last night there was another update done on machine before I went to bed.