The community is also a great place to check out. Try these places for help from other users:
Please review the Third-Party Game Support topic to determine whether your question should be directed to the game developer or to Steam Support. Sending a support request to the wrong party may result in a delay in processing your request.
If you're encountering issues when launching or playing Company of Heroes, make sure everything installed correctly.
Exit Steam entirely.
Browse to your Company of Heroes installation folder (Usually C:\Program Files\Steam\steamapps\common\company of heroes\)
Run the following installers:
Reboot your computer and test the issue again. If the issue persists, contact Company of Heroes support.
Company of Heroes and its expansions share many assets which are installed regardless of the individual expansion that is installed or launched. All content that you own and have installed will always be available in the game's Single Player menu regarless of the main menu that is shown.
Please complete the following process:
Fields requesting CD Keys should be automatically filled in. If this is not the case, please restart Steam, then Verify the Game Cache Files for all Company of Heroes installations in this order:
If the issue persists, please contact Steam Support.
Please follow this link for instructions:
This is a known issue with Windows Vista. Please follow the instructions below:
If the issue persists, please complete this guide.