Enterprise Virtual Vault Error in Outlook 2016

I recently upgraded my OS to Windows 10 from Windows 7. I also upgraded to MS Office 2016 (from MS Office 2010). Finally, I upgraded Enterprise Vault to Version 11 with the Hotfix 3 (From Version 10).

Here's the issue: I can successfully sync my vault with my mailbox, but I'm having a problem adding my vault to Outlook (and accessing my vault files). When I try to add my Virtual Vault to my Outlook Navigation Pane, I get the following error:

• "Enterprise Vault Could Not Add or Remove the Following Virtual Vaults"

Any suggestions on how to fix this issue?

Thanks!

Dan