Thanks for the quick response. Here are a few more information:
We are using RH in a build server environment, not the UI, but the RHCL compiler directly. When RH is invoked, each compiler runs in its own process.
I would assume that command prompt compilation in a build server environment is fairly common in SW engineering.
I should also mention that this process worked perfectly fine with RH9. Since we upgraded to RH11 recently, the build generation process hangs directly after issuing the RH command prompt. The strange thing is that the hang-up occurs frequently, but not all the time. There are no error messages whatsoever that could give us a hint about the reason for this error.
We suspect that Adobe has changed their sign-in process because the process stops at such an early stage.