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Remote Desktop within home network restriced by Internet connection
At some stage, Remote Desktop Connection (within my home network) from my Toshiba laptop running Win 7 Pro 32 bit to my Custom desktop running Win 7 Pro 64 bit stopped working using the desktop's computer name. At the time I was too busy to track down the reason. After some checking I have found that if I disconnect my router from the phone line, it works!
Here is the detail:
When I RDC using the computer name I get an error "Remote Desktop can't connect to the remote computer..." [When I check the current IP address of the desktop and use it in RDC, I get a login prompt; as soon as I login I get an error message about the validity of the desktop's security certificate. I can bypass this and connect ok. However, I don't want to have to keep checking for the current IP address of the desktop....]
By elimination, I found that if I disconnected my router from the Internet by unplugging the phone line, I could easily connect (but with the same security certificate error).
I then suspected some software must be the culprit. I turned off my Windows firewall, Avast antivirus and Spybot and tried again, but this did not solve it.
I am not sure what to do next. I have discounted the security certificate error. It says that it is not from a trusted certifying authority.
Any help appreciated.
John