How to change user standard login from Google account to Microsoft account?

Mike Cesnak 0 Reputation points
2026-10-20T11:34:48.7166667+00:00

In the company, we use Microsoft Advertising.

To improve our security, we require all users to login via their Microsoft accounts.
There is a user who needs to be changed from "login via Google" to "login via Microsoft"

I have deleted and re-invited this user and when trying to login via Microsoft, a message pops up saying that the email is already registered under the Google login (same work email address for for both). So essentially, only the login via Google is possible.

How can we fix this to Microsoft account login?

Thank you.

Microsoft Advertising | Accounts, profiles, and login | Account access
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  1. MS Advertising - Chris 0 Reputation points Microsoft External Staff Moderator
    2026-10-20T14:35:21.6966667+00:00

    Hello Mike,

    Thank you for using our Microsoft Advertising Learn Q&A Platform!

    Based on your description, the email address is currently associated with a Google sign-in credential. Even if the user is removed and re-invited, Microsoft Advertising may continue to recognize that email address as being linked to the existing Google-authenticated identity.

    To use Sign in with Microsoft, the user must sign in with a Microsoft account that uses the same email address or an email address that has been added as a sign-in alias to a Microsoft account.

    You may want to verify the following:

    • Confirm whether the user's work email already has an associated Microsoft account.
    • Have the user attempt to sign in directly at https://account.microsoft.com using the work email address.
    • If no Microsoft account exists for that email address, the user may need to create a Microsoft account using the same email address, remove the user from the Microsoft Advertising account, and then re-invite the user after the Microsoft account has been created before being able to use the Sign in with Microsoft option.
    • If the email address is already linked to an existing Google-authenticated Microsoft Advertising user profile, additional account-level changes may be required.

    If the issue persists, could you please provide the following information:

    • The affected user's email address (please do not share any passwords).
    • The exact error message displayed during sign-in.
    • Whether the affected user is a standard user or an administrator.
    • A screen recording from the moment the user begins the sign-in process until the error message or issue is displayed.

    Once we have this information, we will be happy to investigate further and determine the appropriate next steps.

    Account access troubleshooting

    Kind regards,
    Chris | Microsoft Advertising Support Specialist | 1-800-518-5689

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  2. Mike Cesnak 0 Reputation points
    2026-10-21T09:55:28.2833333+00:00

    Hi,

    The issue persists.

    User email: *******@frontrowgroup.de

    User type: standard user

    Attaching the video => our work email is registered for both Microsoft and Google so when logging in, it result in Google being the only option.

    Link to video: (Screen Recording Removed)

    PII Removed

    Thanks.

    Mike

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