RN51600 No longer accessible after upgrade to 6.5

Since upgrading to 6.5 I am no longer able to access my shares via my Windows 10 office desktop.  My windows 10 network locations don't work any more and if I browse to the RN516 (I can see it on the network) when I click on it I get the same "not accessible" error.  I have a Theater PC (also running Windows 10) that can access the shares fine.  I also have two ReadyNAS Ultra 6s that I use for backup that were also upgraded to 6.5 and they are working fine with no issues on all PCs.  I can log into the admin page of the RN516 with no issues and I see no error messages when I view the logs.  I have rebooted everything multiple times.  As noted elsewhere in these forums I have checked the Windows credential manager and see no credentials for my NASs (Both the ones that work and the one that doesn't.)  Everything show up fine and healthy on RAIDar.  But when I hit the browse button on the RN516 it takes my to My Documents folder on my office PC (the browse buttons on the two Ultra 6s work as expected in RAIDar.)  I installed RAIDar on the theater PC and the browse buttons ALL work as expected on all three units.  I also checked the credential manager on the theater PC and no credentials exist for any of my NASs.  Please help.

Thanks,

John