Hello @Heather Turner,
Good day! Thank you for posting your valuable question on Microsoft Q&A forum.
From your description, it seems you’re unable to log in to a Microsoft 365 admin account to enroll three devices for Extended Security Updates because the password has been forgotten. Please let me know if I misunderstood any part of your idea.
In this situation, I recommend revoking the admin account’s access.
May I ask if you have any alternative method to sign-in besides Password? If yes, please try sign-in using this alternative method.

If you don't have any alternative sig-in method, please check to see if there are other IT admins in your organization who can help you with the reset.
I recommend you contact your organization account's Admin to reset your MFA settings through the Microsoft Entra Admin Center. Ask your administrator to follow these steps:
- Go to Microsoft Entra Admin Center: https://entra.microsoft.com
- Navigate to Users > All Users.
- Select your user account.
- Go to Authentication Methods.
- Click "Require re-register multifactor authentication".

This will reset your MFA settings. The next time you sign in, you’ll be prompted to set up the Authenticator app again using a QR code.
If you the locked out account is the only administrator in your organization, then you need to involve Microsoft data protection team. Please try to find the related hotline number to call the frontline and let them raise a ticket for you: Customer service phone numbers - Microsoft Support
Please carefully follow this instruction to ask for Microsoft Data Protection team support:
Depending on your country or region. For some countries, when calling the support number, although there are about 30 seconds opening as something "you can visit the link...." But you can ignore this opening and wait until the option, then "1" as a business email user, "1" again for technical help.
For some countries, it will be an automated conversation like:
First, when you call the hotline, it asks what kind of problem you are worried about.
Answered: authenticator.
A: What kind of product are you using?
B: Office 365 for business.
A confirmation: education or company account?
B: For companies
A: Are you an administrator?
B: Yes.
A: Do you have the other admin in your organization?
B: No.
A: You need one.... Service request?
B: Yes
If your organization's Office 365 Business/Education subscription is from a partner or reseller, and the global administrator is unable to open a service request on your end, contact the reseller's support provider to help open a service request on behalf of you instead.
Please understand that forum moderators have no control over user accounts, especially when it comes to logging in to your account, resetting your password, changing your access, etc.
I hope Data Protection team can successfully revoke your access. If you need any further assistance or need help on any process, please feel free to reply. I'm here to help!
Thank you for your kindness and understanding so far!
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