One of my end users got this interesting message when she tried to open a workbook in Desktop:

 

Zip bomb - Wikipedia

 

The directory is an internal cloud location (and may be the cause); the idea of it is that no matter where you travel inside our company world-wide, your laptop will always connect to your 'personal' cloud folder where your files are kept, secure and backed-up.  Nice in theory but terrible for speedy Tableau execution!  I have a document that instructs my users on creating a local [to their computer] library where they can put their Repository.  Tableau opens more quickly when this is done and it becomes immune to network issues/congestion where the Repository is concerned.