Dynamic Virtual Channels in RDP (Only built in domain admin account works)

Question

We have a virtual channel set up using the TsTeleport API.

Following are the parameters of our scenario better -

• We are passing a user identity from a client to an RDP session
• We have an application on the RDP server that loads the dll, then calls across to the client end to get the information
• It works fine only when the client machine is logged in as the built-in domain administrator on the machine we are RDP'ing to
• It does not seem to matter what account is used to initiate the Remote Desktop session, but as stated the virtual channel fails to open and is null
• There seems to be something going on with the logging-in into the local machine
• The client side pipe end dll was registered by that built in domain admin

Any help would be greatly appreciated. Thanks!

Answer 1

Okay, so as usual, after finally reaching out for help, I've found the solution. Regsvr32 only registered the dll under: "HKEY_CURRENT_USER\Software\Microsoft\Terminal Server Client\Default\AddIns\"

The CLSID needs to be registered for EVERY user before it will work for them. I hope this helps someone else.