If that doesn't work do you have access to the fat client? If so, check and make sure the the Webstart client and Web Server are enabled by going to Settings > dynaTrace Server > Services > Management | Webstart
If that doesn't work, are you able to log onto the server directly? If you can try logging in, launching a browser, and going to http://localhost:8021/ if you can access that then I believe the issue must be network related.
I saw the same problem today at a client after doing an upgrade. Strange thing is that their test environment doesn't have this problem, only the prod one.
There are a number of warnings and exceptions in the log, one of them this one:
Could not initialize class org.glassfish.jersey.internal.ServiceFinder
Neither the Web Dashboards (default port 9911) and the web UI (port 8020/8021) loads. The settings for these are enabled. Neither http://localhost:8020 nor http://server_ip:8020 works, so it's not a connection issue in this case.
The normal 'fat' Client works fine.
Hi Annmarie, I see the exceptions in the Server.0.0.log file.
I checked my dT installation (Test Edition license) on my laptop as well as the client's Test Edition environment, and I do see port 9911 in the FrontendServer log:
WebUI started successfully on HTTPS port 9911
...yet I never see that in my client's broken Production Edition environment.
I've logged a support ticket for this, I'll update here as I receive feedback.