: Open the game launcher, click the Workshop button (located under "Play"), check the box to agree to the Steam Workshop Terms of Service, and hit Accept .
When the system functions as intended, it is invisible and convenient. aoe2 validating subscriptions
Click the Workshop button in the game launcher (rather than "Play") and manually accept the Workshop ToS if prompted. Long-Term Solutions for Permanent Fixes : Open the game launcher, click the Workshop
