I've been struggling on this too lately .

Here's what you need to do:

You first need to disable the use of RADIUS on any of the Edge Service Settings. E.g. for Horizon: Open the Horizon Settings on the UAG, choose "More" then scroll up again and set "Auth Methods" to "passthrough" and save.

Now you can go to the Authentication settings and disable the RADIUS option.

As long as you have RADIUS used on an edge service somewhere, you won't be able to disable RADIUS in the authentication settings.

Thanks for jumping in

I have changed all possible including Passthrough and NADA, I keep getting the same error. Have you tried something else?

This is insaneeee!!!!!!!!!

Check if there are no other edge services that are still configured to use RADIUS. As long as a service is using it, you can't disable it.

If you can't find it, do an export of the UAG config and check if you can see in the config file if you overlooked something.

I have this same issue but when I changed from RADIUS to Passthrough and click save you go back in and there is nothing selected.  

I have same issue

Facing the same issue. Also Radius is not working when configured with UAG but works with connection server, Any idea ?

Hi RJ1312,

Which version of UAG is deployed? Yesterday, VMware released 2111.2 including fixes for RADIUS and RSA SecurID authentication.

See, https://docs.vmware.com/en/Unified-Access-Gateway/2111.2/rn/unified-access-gateway-21112-release-not...

It's UAG 2106 version.

Could you please share your existing settings and attach the file to the thread:

1. Navigate to Support Settings > Export Unified Access Gateway Settings.
2. Click INI to export the Unified Access Gateway settings.

Hi,

Have you tried disabling RADIUS as authentication Setttings first:

Download JSON, modify, upload modified JSON.

It's a little bit of a pain, but I was able to do it by downloading the json file.  Look for the following:

"com.vmware.horizon.adapters.certificateAdapter.CertificateAuthAdapter",       "enabled": "true",        "enableCertCRL": "false",

Change enabled to false, save to a different name and upload the file.  Worked for me.

After that you should be able to disable RADUS from Edge Services.

Oryginal post: https://communities.vmware.com/t5/Horizon-Desktops-and-Apps/How-to-disable-X-509-Authentication-in-U...

This worked for me.  changed to false then on reimport prompted me for my secret, put that in and bam, no more radius.

Thanks @EmilianW1