I have the same problem on my phone and Surface which started on Monday (Sunday in US time). Cannot sync email on either device, have recieved both types of errors also i.e. 80072F8F and 85050025. Have done soft resets, removed and added the account several
times, and these don't work. This is my work email and I have our IT dept trying to look into it. I am not expecting an answer from them anytime soon, given based on what I've researched this seems to be a Microsoft issue which has been happening for some
time for different people with different devices. I am at the point where I will have to do a factory settings reset, in the hope that this may fix the issue, which is not guaranteed from what I've read online, as other with this problem have done this a dn
the problem eventually comes back (likely to be when the exchange certificate expires again).
It is disappointing that I have to use an Android device when out of the office to access corporate email because Microsoft can't get their systems to work together properly! Then they wonder why WP is not gaining traction in enterprise, when issues likes
this cannot be resolved.
Even more disappointing is I am using a Lumia 930 which I got 3 weeks ago, and am now locked into a contract for 2 yrs with a phone that I can't use properly for work.