[jeffn1]

The default folder is C:\Users\<your username>\AppData\Local\Packages\41730Zubersoft.MobileSheets_ys1c8ct2g6ypr.

Thanks.  I will try to create an exception to Defender pointing to that folder.  I will let you know how it goes.

Hmm, is that the default folder for the program as well as the data file?

Jeff