Connection lost

[alext]

I can host a game (and have done for past 5 years).
One player joins with no problem (with Lite License).
Other player connects (with Lite License), but then immediately gets 'connection lost'.

All running v2.9.1.
We've tried re-installing for the player with the problem.
We've tried swapping the Lite license keys around.
We've tried disabling the firewall for problem player.
No success so far. Can you help?

The problem coincided with the other player getting a new PC, and I gave him the same lite license key initially.

[Trenloe]

Can the player with the problem connect OK just by themselves? Or is it only a problem when there are 2 (or more) players connected?

[Valarian]

Might try removing the campaign file on the problem computer and re-downloading the files. It could be a corrupt campaign file.
It could be that the Lite license in the registry is still the other (duplicate?) one. In which case, FG2 wouldn't allow a connection as it'd think that the license is already in use.