Running on a Windows 2012 server on Google Cloud. For the longest time we have had a webDAV server set up and use Windows to map drivers to the remote server. Everything has worked normally until about a week ago, in Excel and ONLY excel (using Office365) we've been getting a popup recently that says
"This file has been renamed. We recommend saving it now to get the new name." The only options are SAVE and LATER. It happens soon as the file has been opened. The odd part is you can close out the message and go about working on it and save just fine. The message pops up any time an Excel file is opened.
The only workaround I've found is creating a new user profile and oddly enough the error went away, but the issue is starting to crop up on other computers as well.