I've already read through a lot of threads regarding this. Our RDGW has been working for approx 2 years. Suddenly now, some clients start to get the "logon attempt failed" when they are using rdgw. It does seems to be an increasing problem..
- Redirection in IIS is OK, checked out!
- Blank page appears when i try to logon to http://rdgw.server.com/rpc - This is OK.
I see NO non-normal entries at all in event viewer on the gateway server.
The only thing I get in event viewer on the client is:
TerminalServices-ClientActiveXCore/Microsoft Windows-TerminalServices-RDPClient/Operational:
EventID: 1026 - RDP CLientActiveX is disconnected (reason= 50331649)
EventID: 1025 - Connection with multiple transport is disconnected(not correct - google translate from locale)
This is the only thing I can see in the logs, it pops right after I get the: "The logon attempt failed"
I think a certificate issue is excluded since most of my clients can connect - all certs er valid.
We got people externally and locally that are experiencing this issue (I've forced rdgw to be sure on the local clients) So most likely this problem has nothing to do with external/internal.
On those computers who are unable to logon using rdgw, none accounts works(i've even tried domain admin). So the problem is not user-based either.
Since the "the logon attempt failed" pops within a second I was'nt sure if the traffic even got to our RDGW, so I checked with wireshark, and I can see that the gw is responding in ssl back to the client. Still there is no entries in the log on the rdgw server..
Any suggestions?
thanks