Спасибо, но помогло только это

- Try creating a new Windows admin user and try to login to the game. Sometimes admin account credentials get screwed up and this messes up games.
- Delete the game's reg keys at HKEY_CURRENT_USER\Software\NeoCore Games\Warhammer Martyr\
-Open an admin cmd, type netsh winsock reset and hit Enter
-While there, type ipconfig /release (your net will go away) and then ipconfig /renew (it will come back), then ipconfig /flushdns
-Disable proxies. Press Win + R keys. Type “inetcpl.cpl” and hit  Internet Properties, select Connections tab. Select Never dial a connection if you see it (somewhere below “Choose Settings if you need…”). Then click on LAN settings. Uncheck Use a proxy server for your LAN. If it is already unchecked, select Automatically detect settings.Click on OK all the way out.

Try out the following options which reportedly helped other players with this issue in the past:

• Restart Steam and then check if the game runs

• Run Steam in administrator mode then launch the game

• Launch the game from the game's library

• Launch the game as an administrator