Windows 7 Remote Desktop - not connecting to one specific public IP address. others are fine.
Posted on 2014-08-13
Have run into something here I have never encountered before. Please let me explain. I have a remote user (Windows 7 desktop at home) that was always able to RDP into her office to work. All the sudden the RDP connection will no longer connect. It just shows the generic "Remote Desktop cannot connect....."
This was working fine for over a year and all the sudden stopped working this morning.
I've already exhausted what I could think of, including re-creating her remote connection on her desktop.
The office computer the user is remoting into is just fine (it's also a Windows 7 computer). I can remote into it from my office (externally) and I can remote into internally (from the server). Works just fine.
Odd thing is when I test other remote connections to other external servers on her home computer she can connect just fine to all those. But when I try to remote into her office computer or any other office computer with that particular client and with that particular public IP address - she cannot connect to any of them - almost like the IP is blocking or the firewall. Please note I have different remote ports set on different computers in their office so users can remote directly into their computer from home (i.e. port 3397, 3398, 3395). I've double-checked the firewall at the office and it's fine (Watchguard XTM unit). Again, I remote into her office computer from my office (which is external) no problem (and so can another remote user with this client). It's just this particular remote desktop connection.
I've scanned for viruses/malware and found nothing. I've checked the logs on Windows and all clean. Computer can reach the internet perfectly fine and again - can RDP into other public IP addresses.
rebooted her home router (Cisco router) and still the same
I then tried to open a web-browser for the Outlook Web access (they are running an SBS2011 server) on her home computer (via the public IP address) and I get the error "page cannot be displayed". Yet from another computer -that page is working just fine.
I am out of thoughts and suggestions if anyone that has experienced this before please feel free to let me know what you have done or some other suggestions I can try.
Been digging around all day for this one.
thank you very much