Why does modern warfare say account registration error?
The Account Registration Error is usually caused because of a problem with the email address you are trying to use. Most commonly, the email address is already linked with an existing Activision account. On very rare occasions, it may be the case that you can't create an account because of a glitch within Warzone.
Why can't I login My Activision account?
To fix the problem, first cancel the login, then back out and enter your password again. ... We know first-hand that Warzone will get stuck logging in to your Activision account if you enter the wrong password. If that's the case, all you need to do is double-check that you entered your password correctly.
Why wont Modern Warfare Let me make an Activision account?
When players find that the game hangs when trying to register an account, it's often because their email address is already in active use. ... When you get stuck registering for an Activision account in Warzone, you need to make sure you don't already have an Activision ID tied to your given email address.
What do you do when it says account registration error?
Answer: Error: 0 will occur if you attempt to register for an account in game using an email address that is already tied to an existing Activision/Call of Duty account. Workaround: Back out of the game, then relaunch the game and sign in to the game with the email address that gave you the error.