Uninstall Age of Empires II: The Age of King and Age of Empires II: The Conquerors Expansion pack.
Please make sure to close Voobly and Steam, before performing a clean installation of Age of Empires II, else you will run into more problems.
Uninstall any previously installed compatibility patches from Control Panel > Programs & Features.
Uninstall Age2HD from Control Panel > Programs & Features.
Rename the folder Age2HD to Age2HD_old in C:\Program Files (x86)\Steam\SteamApps\common.
Go to View > Settings > Interface and set Steam language to English.
Exit Steam and restart the client.
Install Aoe2HD through Steam client.
Right-click on Age of Empires II: HD-Edition and click Play Game.
Wait for the dependencies and updates to be installed.
Click Play to start Aoe2HD and Exit once you the program was started for the first time.
Now join one of the AOC lobbies on Voobly and the Game Diagnostic should pop up. If that’s not the case, click Game Diagnostic in menu Options and click Yes.
The compatibility patch will now download in the background. You should see the following window below. Click Next.
Double check whether Age2HD is installed in the directory shown below and click Next.
- 32-Bit: C:\Program Files\Steam\SteamApps\common\Age2HD
- 64-Bit: C:\Program Files (x86)\Steam\SteamApps\common\Age2HD
Confirm the installation by clicking Install and wait for the installation to complete.
Wait for the installation to complete.
Complete setup by clicking Finish.
Close Game Diagnostic, DO NOT click Yes or No again. Also close the game lobby and re-enter the lobby again.
Now open the Game Diagnostic again, by clicking Game Diagnostic in menu Options.
Navigate to the following web site: https://www.memberplus.org/ to download latest version of the compatibility patch.