Forum Discussion
Outlook 2016 Sharepoint Calendar - started throwing authentication protocol error
Hi, Outlook 2016 users (me included) are reporting this error message when their Outlook 2016 is connected to a Sharepoint calendar: This has literally just started yesterday, and I've just h...
Also looking into this update which could be relevant https://support.microsoft.com/en-us/kb/3118293. I'm going to try removing each of them and let you know what I find out.
After removing update KB3118375 and then KB3118293, the error box is still present. I also have (may already have had?) a send/receive error 0x80070005/HTTP 401 relating to the same Sharepoint Calendar list:
In fact, each time I remove these updates and restart, and then look in my installed updates, one of them is back - so I can't reliably say that it's not caused by one of them...