Posts from I can’t launch custom campaigns. Auto-translated

The game cannot read custom campaigns with the .h5c file type, but it can read them if the file type is .h5m. What should I do, as most campaigns are in the .h5c file type? I am following the instructions for version 3.1 exactly. How can I fix this problem?

The campaigns for Heroes of Might and Magic V need to be launched through Single Player => Modifications => [Campaign] > Load.

To launch the Heroes 5 campaigns, go to Single Player => Modifications => [Campaign] > Load.

I simply renamed the campaign to Russian, and it worked fine.