Hi, my name is Annanda, thank you for your question and for reaching out.
Lauren C, as mentioned on the Epic Games website:
" This error message appears when you try to log in to Epic Games using a Microsoft account without an Xbox Profile.
To resolve the error, you will need to create an Xbox profile by following these steps:
In a web browser, go to: https://www.xbox.com/
Sign in with your email address.
Follow the on-screen instructions to complete the setup of your Xbox account
Reattempt to log in to Epic Games.
Note: If you already have an Xbox profile and you're still experiencing the issue, make sure you are logged into the correct Xbox profile. You can use incognito mode to bypass autofill and manually log in to the Xbox profile. "
https://www.epicgames.com/help/epic-games-store-c5719341124379/there-was-an-error-processing-the-credentials-from-the-external-login-system-error-a5720363821339">https://www.epicgames.com/help/epic-games-store-c5719341124379/there-was-an-error-processing-the-credentials-from-the-external-login-system-error-a5720363821339
And if that does not work, you need to create a ticket on the Epic Games website for them to be able to assist you with what is wrong, okay?
https://www.epicgames.com/help/
In case they ask you to contact Xbox Support directly, here is the link:
https://support.xbox.com/contact-us/
I hope I was able to answer your questions! Please, if you have any other doubts, we are here to help.
If the reply was helpful, please don’t forget to upvote or accept as an answer, thank you.
Best Regards, Annanda.
