Windows 2022 Remote Desktop Gateway

Question

Hi,

I have setup a new remote desktop deployment with RD Gateway, previously done this fine with Windows 2016.

It all woks fine when using 'bypass RD Gateway server for local addresses;, but whenever I try to connect via the RDG i.e. externally or from a test pc internally it throws an error "There was a problem connecting to the remote resource. Ask your network admin for help." Error code 0x3000008, extended error code 0x0.

I have tried various things but nothing seems to work, no errors logged apart from a security failure on the remote desktop gateway server relating to NTLM...
Failure Reason: An Error occured during Logon.
Status: 0x80090302
Sub Status: 0xC0000418

The server has a certified SSL installed, all required ports are open and you can logon to the rd web interface fine.

I have this same setup fully working and in production with windows 2016 but just cant get the 2022 deployment to work.

Any ideas on what to try?

Thank you,

Jamie

Answer 1

I have similar problem with Server 2022 as a remote desktop gateway. On Server 2019 everything works as it should. Did you ever solved this?

Answer 2

Hi,
I did solve this within my network, it was due to an NTLM restriction group policy on the DC's.
The policy was within the DC policy, Windows Settings, Security Settings, Local Policies, Security Options.
Network Security: Restrict NTLM: Add server exceptions in this domain.

I added the new RDS gateway server into this exception and it all worked.

Hope this helps,

Jamie