I opened COMPUTER and removed a 'Network Connection' that pointed to a server that is not currently available.I wanted to start with the simplest, lowest-impact solution. This also sounds like a network client timeout kind of thing. By pressing F5 I was 'rushing' the process.
For example, if I try to create a folder in my DOCUMENTS folder, the problem occurs, but if I create the folder in a random folder on the C: drive (e.g.
Fixes included disabling the Windows Client, disabling home groups, disabling file shares, etc.