If the game fails to start, try running both Steam and the game executable as an administrator. Technical Specifications
To prevent launch issues, it is recommended by Capcom Support to add the game folder and MMLC2.exe to your anti-virus exclusion list. File: Mega.Man.Legacy.Collection.2.zip ...
Save data is typically stored in %APPDATA%\MegaMan\ or within your Steam userdata folder under the ID 495050 . If the game fails to start, try running