So been looking all over about this issue I had to assist on today. Client's both have macs with Outlook 2011, apparently this company migrated to Office 365 back in October and have been having issues since February or something from what they are reporting to me.
Only 1 person in the office is having this issue, his Outlook constantly keeps synching and updating to the server and his calendar entries keep making copies of themselves on a huge scale, some entries have copied themselves like 30 times or more. It's only a handful of calendar entries though, not all of them. There's an error 19126 but all I could find was some synch setting in preferences which is turned off already so that didn't work.
I told them to try using Outlook 2009 or w/e version was before '11 for Macs and see if it persisted there. Their IT guy set up Outlook on his mac at home, linked it to this guy's profile and had the same results so I know it's not just something with his laptop. Office 365 support was utter shit, had them delete calendar entries which caused his appointments to send out cancellations, fucking over his workweek which he was not too thrilled over.
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