My home desktop PC (Windows 10, 1803) has suddenly developed a problem. I sometimes work from home by connecting to my office PC via a Barracuda VPN appliance that IT installed in our server room for that purpose. Normally I do this:
1) Start the Barracuda SSL VPN Agent (v2.0.3) on the local PC, request a new session.
2) The Agent launches a brower window, connects to the Appliance web interface with a login screen.
3) Login using my domain credentials. At this point, if my local PC didn't meet the server's minimum rules (active antivirus software, mainly) it would deny the login.
4) Complete the login and wait for the user Dashboard to appear, then request a My Computer session.
5) It will pop up with an "Are you sure...?" window and the connect to 127.0.0.1:PORT which launches the Remote Desktop session using RDP on the remote computer (Windows 7 Pro).
Here's the thing: On my desktop, after requesting the connection it stalls at the end of Step 5 while initiating a remote desktop connection. If finally times out with an error suggesting that the remote PC is turned off or RDP is othewrise unavailable at the remote end. But everything still works fine on my personal laptop on the same network running the same version of Windows 10, Agent, and Chrome, with Windows Firewall. Here's what I've tried:
1) Reinstalled the agent on the desktop PC. Same behavior.
2) Virus scan (Avast). Nothing turned up.
3) Dug through some troubleshooting suggestions for RDP, but RDP is working fine on the remote PC so not sure how the local PC factors.
4) Tried walking back through the Windows Firewall settings but don't see anything there (and nothing should have changed there, either).
5) Tried installing the Agent on another virgin laptop (same version of Windows 10 and Chrome) and it connected on the first try.
6) Looked through Device Manager to see if any shadow copies of network adapters had appeared from somewhere, but don't see anything (and Internet is working fine otherwise).
I haven't a clue where to look next. This is one of those "it always just worked" things. No hardware or software changes occurred on the local PC AFAIK, but the problem is evidently localized to it.
The only other thing that happened recently is that our home had an extended power outage Friday afternoon, which depleted the UPS to the PC and the UPS to our home network closet. But everything came back up when power was restored, and seems normal.