Oy! Microsoft!!
This is the new way (2022) to clear the Office Cache.
If you have been stuck with an Office file in the Microsoft Cache on your PC and you need to clear the cache, then this short post is for you. Remember the Office Upload Center. Well it is gone for the Enterprise Users.
Look at these Microsoft posts:
Microsoft Support told me that this functionality has been moved to the Office Applications in the Enterprise version of Office. Furthermore, the support person told me that she tried to google the solution. Turns out that she couldn't find the solution by searching, but her team leader knew the answer.
To clear the office cache you need to do the following:
What about the Delete Cache option in the Upload Center?
This option will now be under File > Options > Save > Cache Settings.
How do you know if you need to clear the cache? Usually there is a problem saving the file from the full Office Application (Word, Excel, PowerPoint) and only one person is experiencing the issue. The file can be modified by everyone in Office Online and most people have no issue changing the file with their Office Application. Also, renaming the file will solve the problem.