Posts from Heroes V и Windows 10
The following helped: game shortcut -> Properties -> Compatibility tab -> check the box next to "Disable fullscreen optimizations".
This method also solves the problem with the black screen when launching Heroes 6.
Good afternoon. I have the following problem: when I launch already downloaded Heroes 5 on Windows 10, the splash screen appears, then a black screen appears, and the game crashes. I downloaded the game from different sources, ran it as an administrator, and tried switching compatibility mode in the game's properties. The same error occurs. Please advise if anyone knows how to fix this...

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Неудачное планирование ведёт к неудаче ...
NCF - мод, добавляющий дополнительных существ в HeroesV 3.1
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Группа картостроителей
Там ответы на вопросы, руководства, гайды и прочее
Discord-сервер "Герои 5: S.T.A.L.K.E.R"
Сервер по модификации "Герои 5: S.T.A.L.K.E.R"
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Several launches - it starts crashing when loading the intro.
If anyone knows how to fix it, please write.
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Группа картостроителей
Там ответы на вопросы, руководства, гайды и прочее
Discord-сервер "Герои 5: S.T.A.L.K.E.R"
Сервер по модификации "Герои 5: S.T.A.L.K.E.R"
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I also found out that if you start the game in fullscreen mode and then switch to windowed mode, the game works, but launching it directly in windowed mode causes it to crash.
In general, it's complicated and nothing is clear.