Your password can't contain the part of your email address that comes before the @ sign

Hi, my name is Fernando and I am an independent consultant for Microsoft products.

Check if the password you're using do not contains any mnemonic that can be confused with your email.

For example:

email: "*** Die E-Mail-Adresse wurde aus Datenschutzgründen entfernt. ***"

pass: "y0ur3m4il"

By the way if you still having issues with the password just try any other secure password to use.

If it sends you to login.live.com or hotmail.com, and shows you the login page, the drop-down list may contain email addresses that have logged into your computer. Put the
email address you used for your Gamertag, and then type your password. Click login, and then you're into your email!

If your One Drive is part of a different account, you will not be able to merge it. I would suggest attempting to sign in at https://account.microsoft.com with your old obsolete
email address and password

Hi. My name is Brilliant, an independent advisor, happy to assist you today.

If you know the email address that you used to set up your Microsoft account (which is used to sign in to your Xbox profile), you can reset your password now:
1. Go to Reset your password and enter your email address.
2. Select where you'd like to receive a security code (email or phone number).
3. Once you receive your security code, you'll be prompted to choose a new password and enter it twice. Passwords should be at least 8 characters long and should contain a mix of upper and lowercase letters, numbers, and symbols.

To reset password, kindly visit: https://account.live.com/password/reset

You must have your Microsoft account email address to reset your password. If you've forgotten this email address, you'll need to recover it before you reset your password: https://support.xbox.com/help/account-profile/manage-account/forgot-microsoft-account-solution

For more details on the above, kindly visit: https://support.xbox.com/help/account-profile/manage-account/lost-password-solution

I hope this helps resolve your query.

Go to verifyme.microsoft.com. If you are able to sign in to the profile successfully (i.e. you have the correct email address and password), sign in to that website and it will tell you to verify the email address to continue. Right below that, it will
also give you the option of using a new email address to sign in to your profile. This is how you can change an email that you can't verify.