Why won't BlackBerry Link backup my Passport?

Yes, I know this has been discussed a lot in the forums. Believe me, I've done my research and tried just about everything. Bottom line is that Blackberry Link will not back up my Passport. I consistently get the message: "Backup did not complete" either shortly after the backup begins or before it starts. I have tried all of the following workarounds:

1. Disabling Windows Defender, firewall, and anti-virus.
2. Uninstalling and reinstalling Link
3. Numerous hard resets and soft resets of Passport
4. Deleting almost all of my apps, including any that appear to have a lot of data associated with them.
5. Selecting a custom backup.
6. Replacing my USB connector cable with a new cable.

I'm about at the end of my rope. Any additional suggestions aside from reloading the device software?

How full is the HD on your computer? Run a disk check on the computer?

Yes! That worked! I'm still on 10.3.0, and changing the USB mode to Windows solved it. Thank you so much!

"10.3.1.x and the computer is a Microsoft Surface Pro 3, the backup will not work."

Can you please tell me why this is???

I have the same setup but am now on 10.3.2, and I have the same issue. In previous OS versions, you could set the USB mode to "Windows," and that did the trick. With one of these OS updates, that setting disappeared. I haven't had the need to mess around to see if it can be resolved.

Posted via CB10

I have never been able to do a back up on my Mac..just get the same ' failed to produce a back up file '...

This? It's a BlackBerry Passport....its a grown up's phone