Remote Desktop Problem

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Have been asked to look at a PC for someone. Although they only live around the corner i can't leave the house at the moment.....

Anyhow, the strange thing is i cannot get in via RDP over the net. I can just about get in via wireless but it drops out due to being on the weakest signal ever! I can access their router and have made sure port 3389 is forwarding, their is an exception on the router firewall and windows is set-up for remote desktop and windows firewall.
I can access their desktop via their LAN address (via the wireless) but not computer name or the most important thing; internet.
Google and MS come up with errors like the screen dropping out, or slow response etc....

Error attached

 

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so when you are talking about wireless, that is their wireless router that you can access (although barely) because they live around the corner, right?

okay, so when you setup the port forwarding, did you forward to an ip address, or a wins/dns name? if ip address, is it a static address? if wins/dns name, is there a wins/dns server in the lan?

and when you try to access via the internet, do you use their external ip address, or a dns name? if dns name, is it an existing host name?

 

well, he said he could access it via the internal ip address when connected to the wireless router, so i assume your points are pretty much covered.

 

Thanks for the input.

Yes, i have an admin account on their machine. I am using the IP address of the machine, not the computer name

 

I had a very similar problem a few months back. It was the .dll file on the machine.



To register remotepg.dll:

Click Start, Run and type this command:

regsvr32 %systemroot%\system32\remotepg.dll

Worth a shot anyway.

 

Thanks for the input guy's, ive just figured it out; the firewall.

I knocked it off all together (via wireless) and bingo! The exception was LAN to LAN instead of WAN to LAN.

 

the error message was vague to say the least. The reason i suspected the firewall in the end was because i knew there were a few exceptions you can create for individual rules;

WAN-Router
WAN-LAN
LAN-WAN
LAN-Router