[SECURITY LAYER] RDP not working with SSL but does with RDP

Question

Hello,

I have a strange problem that I can't resolve.

I have much Citrix VDA (RDS role installed so).
On theses servers, I have the same GPO with theses parameters :

1 - Computer Configuration -> Policies -> Administrative Templates -> Windows Components -> Remote Desktop Services -> Remote Desktop Session Host -> Security -> Require use of specific security layer for remote (RDP) connections -> SSL

2 - Computer Configuration -> Policies -> Administrative Templates -> Windows Components -> Remote Desktop Services -> Remote Desktop Session Host -> Security -> Set client connection encryption level -> High Level

For some servers, I don't have connection problem through RDP.
For others, it doesn't work, I have this message "An internal error has occured".

On the servers where it doesn't work, when I change the "SSL" parameter to "RDP", it works.

I have compared the certificates, with one of a working server and one with a non working server, and I can't see anomaly
I tried to delete the certificate on a server where the "SSL" parameter not working and regenerated one. It's not working.

Servers are all up to date.
I can't see what is the problem here...

Do you have an idea ?
Regards

Answer 1

Hello @G F

Since the issue is related to rejected connections from Citrix VDA, which is a 3rd Party program to Microsoft, it would be recommended that you get in touch or post your question into Citrix VDA related forums. Their community would be better experienced and knowledgeable in that specific software to help with the configuration, troubleshooting, analisys of the issue and help you further.

Hope this helps with your query,

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--If the reply is helpful, please Upvote and Accept as answer--

Answer 2

Hi,

I've also the problem with one RDS who is not a VDA

Thanks

Answer 3

Hi,

No one ? :(

I've test on one server to unistall the VDA and the RDS role.

The problem is still the same.

Regards