Just installed ArcGIS desktop on 2 machines. We upgraded from v10.3 to v10.4.
On my machine I am having no problems (so far). On the other machine we are having problems opening the MXD's we were using in v10.3. Some MXD's open without problems. Other MXD's won't open at all. The only error message we get says "windows is going to shut down ArcMAP"
I did find something in the Event Viewer on that problem machines. There it lists 2 files; ArcMap.exe and sdemssqlsrvr.dll
One more thing, the MXD's that won't open on machine 2 open without problems on machine 1.
So far that's all the information I have. I've been online looking for someone else that has had the same problem. Nothing so far.