Age of Empires III

How can I play Age of Empires III online? Keeps saying invalid key code (4)
Help! Bad CD-key Error 100 (17)
Any updates on Age of Empires III Definitive Edition? (2)
Help please 101 my Key alredy in use Age of Empires 3 complete edition (3)
Can't log into ESO, because of dead e-mail adress (15)
AoE III: DE Senior Producer (10)
Age of Empires III Definative Edition (3)
How do I make the map smaller? (2)
Would you like to have more zoom levels in AoE3 Definitive Edition? (14)
Polls (5)
AoE III multiplayer (8)
My Age of Empires III Complete collection doesn't work in Windows 10 (15)
Turn based features e.g. 'Hometown Card Deck' (2)
Fun with making Walled Compounds Complexes (3)
Can't sign to ESO (5)
Is Age of Empires III's campaign the best of the franchise? (9)
Multiplayer mode (3)
Bought age of empires 3 on steam - get an e error "unable to create account 100 – Bad CD key" would you guys help me? ( 2 ) (23)
My Guide for AoE III tactics and strategies (2)
Warning: Previously-official domain no longer owned by Microsoft (1)
Problems with the ESO and CD key account (6)
Aoe3 doesn't start on win10 dx12 (12)
Steam Age Of Empires 3 Complete Collection. Error [100] bad CD key (3)
Problem with AoE3 online connection (3)
Failed to request steam product code. Please wait, try again in a few seconds. (14)
Failed to request steam product code. Please wait, try again in a few seconds (3)
Need help with changing the build limit (3)
AoE3 not starting, win10, directx12 (1)
AoE III Installation Help for New Laptop (4)
Mot de passe oublié (11)