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AnyConnect NAM EAP-FAST user certificate issue

fedor.solovev
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Hello, guys.
Did someone face the same issue ? Any hints are appreciated.

I am migrating from Windows Native Supplicant using PEAP to

NAM using EAP-FAST with machine and user cert authentication.

NAM is installed, configuration.xml is uploaded, machine certificate authentication is successful (can see it in ISE logs)
The issue is:
If/When a new user logs into the PC it fails to download it's user certificate and GPO policies
=> which causes a pop up window: No valid certificates available. Please insert a smart card or install a valid certificate.
=> Then NAM blocks network completely.

at that moment no certificate available for user in Personal directory.
gpupdate fails because the PC cannot reach GPO server

I tried using a setting in NAM Profile editor under Client Policy -> connection Settings - Before user logon for 60 seconds but it didn't help.

PC still fails to upload a user profile and fails to connect to network.
- ISE 2.6
- NAM 4.8
- Win 10
- Tested for Wired

The current very bad workaround:
To disable NAM on the driver, authenticate using PEAP native supplicant, download a profile and a user cert, enable NAM back and successfully use EAP-FAST

which only proves that a user profile cannot be downloaded because of NAM.

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