Yes, thank you, that little application helped me, props to f*ckfish too (LEL)

So, before I formatted my PC, when I double clicked a .gbx file, it would open TMNF, if it wasn't open, and then a popup box was shown with 3 options (Watch, Play Against, Cancel). Now, the .gbx doesn't even recognize TM as it default program to load, and I already tried to open it as the TmForever....

Yes it did work, now I decided to reboot my router and guess what, it worked (LEL), so yea, lets just hope this doesn't happen again.

As a developer I'm ashamed I forgot the first rule of IT, first stop should reboot. (LEL)

There wasn't any. Firewall is disabled, but I already tried: 1. Enabled it and put "C:\Program Files\Steam\steamapps\common\TrackMania Nations Forever\TmForever.exe" on "Out Rules" and "Entry Rules" as "Allow Connection" 2. Just disabled 3. Disabled and put &q...

Nah, it was redownloaded and installed. And yes, I only have TMNF installed.

I knew there was no need, but I was already planning on doing it, and since I was already having some others problems I decided to do it today. And about the router, no, it was not modified since some months ago, but I guess that if it was the problem, then I would probably be having this months ago.

So, I tried everything you said, and I even formatted my computer but it's not working anymore, so I really don't know what to do know, because last week it was working and now it's not.

Sorry about the wrong forum. Anyways, I tried that and didn't work. If it may be useful, this problem started after I installed "League of Legends" at my PC, I don't know if one another may have messed up connections configuration, but I already had this problem at our company, we are soft...

So, it's happening with me since friday (08.07.16) and seems like I can't connect online anymore. I've already looked up on forum to see if someone had the same problem and couldn't find it. What I do: 1. Enter the game (via steam) 2. Select a perfil 3. A message box says "Connecting to the mas...