I'm not sure where to post this - so please move as necessary.
I received the error message in the screen shot when shutting down Win 10 (build 10130). There where two operations I did, one of which may be the cause of the error.
First I was renaming two files (in explore>right click>rename). The first went fine. The second file was renamed but would not complete. System froze and had to use Task Manager to end process.
The second thing I did was to rename the Computer. This worked fine, but the old computer name was still showing the network tree. I clicked on it and the discovery started but after a few seconds failed. Win10 seemed to be stuck at this point but eventually returned to normal.