I'm encountering a very peculiar bug in ArcMap 10.5. I have an mxd I created as part of a large project, and when I attempt to save edits to a feature class from the project's file geodatabase ArcMap freezes every time. Initially I suspected that either my mxd or geodatabase had been corrupted, but I can successfully save edits to shapefiles from different directories in the same mxd AND save edits to feature classes from the same geodatabase in different mxd's. Perhaps it's something about the particular combination of layers that are added to the dataframe? I really don't know. Everything is in the same projection and I haven't encountered errors running any other tools or processes. Without success, I've tried:
Any ideas would be much appreciated. Thanks!
Something else to try - rename the ESRI folder in the C:\Users\<user profile>\AppData\Roaming and C:\Users\<user profile>\AppData\Local to ESRI_old. You'll lose any ArcMap customization you've done but it will reset ArcMap.