Support for this title is provided by Age of Empires Online support. You can ignore any fields that do not apply to your question about Age of Empires II HD when submitting a ticket about Age of Empires II to Age of Empires Online support.
The community is also a great place to check out. Try this link 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 with launching Age of Empires II HD, make sure everything installed smoothly.
Exit Steam entirely.
Browse to your Age of Empires II HD installation folder (Usually C:\Program Files\Steam\steamapps\common\Age2HD\)
Run the following installer:
For 64 bit versions of Windows:
For 32 bit versions of Windows:
Reboot your computer and test any issues again. If the issue persists, contact Age of Empires II HD support.
If the above does not resolve the issue and you are running Windows 7 or Windows Vista, please complete the instructions in our Windows 7 and Vista Troubleshooting FAQ.
If you are running in Windows XP, take the following steps: