Could Not Avtivate Mass Effect 3 Error

When you buy a game for the first time and try to run it, it installs EA launcher where you log in with your EA account and it will basically connect. Your error is telling you that there is a different account where you own Mass Effect 3. Possibly in your browser there is different account than in the EA app.

Have you tried the move license folder trick?  Though this usually arises when a preexisting working game all of a sudden stops working.

One note: try just MOVING the license folder (say to desktop) instead of DELETING.  That way you can put it back if the fix doesn't work.

Thank you for your reply. I did have another account a long time ago, but unfortunately I lost it because the email address associated with it was deactivated. That’s why I don’t think that’s the problem, since the two accounts were never linked. Unfortunately, I wasn’t able to recover that old account, so I bought the game again many years later.

Thanks for your reply DoctorDAM​ DoctorDAM I've already tried that trick, but unfortunately it didn't work for me for some reason. If I deleted the license file, it reinstalled itself; if I moved it, unfortunately nothing changed.

If you have any other ideas on how I can solve this problem, I’d really appreciate your help. If there’s anything else I can tell you to give you a clearer picture of my problem, just let me know.

cea1638bd33a3709​ Hey, that sounds like your install is trying to load the license for a game associated with a separate key in the registry.

If you had two accounts, and you cannot gain access to it anymore, you would have to wipe everything Mass Effect related if the license steps did not work. It wants to activate a key to an account that doesn't own that key (not the game)

Have you gone through all the steps listed on the Unauthorized DLC Error Guide? 

It is not your error, but the same steps we would use to solve this error apply to you, too.