Duo Prompt not loading on Windows 10 PCs

We are new to Duo but did successfully install/use version 4.20 on 4 of our 6 Windows 10 PCs on the domain. On 2 of the PCs the duo prompt does not load after the user logs into compter…it goes straight to desktop. We have verified the username is correct for both. WE have tried uninstalling and resinstalling DUO.All PCs have same configuration/firewall AV, etc. We have generated a support ticket but no conclusion yet. HAs anyone ever had this issue and what was resolution?

Hello @PORBAR ,

The first place to check is the debug logs as this will tell you what is occurring during logon. After you enable debug logging, duplicate the issue and examine the log file. Duo’s Support team will likely need this to assist in troubleshooting, too.

It could happen for a number of reasons, one being if the Fail Mode is set to Open and the PC is unable to communicate with Duo’s cloud service.

Hope this helps!

Thank you for the help…we think we have narrowed it down after enabling the logging—very helpful. Appears to be conflict with Dell Encryption Credentials Filters.

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