Maniaplanet Forum

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 "C:\Program Files\Steam\steamapps\common\TrackMania Nations Forever\TmForever.exe" on "Out Rules" and "Entry Rules" as "Allow Connection"

None of them, then I tried the same with "C:\Program Files\Steam" as a exclusion on my anti-virus software (avast), but didn't work too.

Since when do you have Avast? Was it also working before with it?

If the firewall is "clear", then it is another application which is blocking TMNF.
And I mean a running application. It can be some chat program, file share program, anything using web technology and ports.
But I have to give up, once because of late time now, and second because I did not use TMNF a lot, I preferred TMUF and later Maniaplanet.

If you search for 12002 you will find lots of issues already here in the forum.
One interesting issue was a pending firmware update of a user with a Fritzbox: viewtopic.php?f=470&t=30292&p=238651&hi ... 02#p238649
And another user had issues when using WLAN: viewtopic.php?f=264&t=30032&p=236324&hi ... 02#p236324
And another hint was to check DNS configuration. Although the recommendation was more targeted to a dedicated server user, it might also be your case.

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)

IT-Crowd: Have you tried turning it in and off again?

LÖL

It is not working, it must be something complicated nobody can explain, because everything else is certainly not the cause