Easily Resolve Unlink Mobile Number Email in Office

If your workflow is blocked, confirm the account and app context, then follow the ordered fixes below.

Problem Description: Unlink Mobile Number Email

I recently started receiving authentication codes on my phone for an email account whose username I’ve forgotten. I’m pretty sure I deleted it, but apparently not. Microsoft support hasn’t been very helpful. They only gave me the first letter of the username, which isn’t enough for me to remember the whole thing. Is there any way I can unlink my phone from the email and permanently delete the account?

Quick Answer for Office Setup on New Device

To unlink a mobile number from an email when you've forgotten the username, first recover the username using the phone recovery option on the sign-in page (select 'Forgot my username' and receive a security code).

Likely Causes Behind MFA Root Factors

• The Microsoft account or license context may not match the purchase or device.

• Cached credentials, outdated builds, or damaged local components can trigger mfa & verification issues.

• A file-specific corruption or add-in conflict can mimic a broader application failure.

Recommended Solution: Restoring Office After Errors

When to use this: Apply these steps when the symptoms match and you can access the relevant Microsoft account or administrator.

1. Once recovered, use Microsoft Graph PowerShell command Remove-MgUserAuthenticationPhoneMethod -UserId $userId -PhoneAuthenticationMethodId $phoneAuthenticationMethodId to remove the number.

2. Note accounts become inactive and deleted after ~2 years and 60 days.

Alternative Solutions for Secondary Login Fixes

1. Retry the Microsoft-side steps after restarting the app and device.

2. Test the same action in a private browser session or a new blank file to isolate account vs file issues.

3. Capture exact error text and screenshots before contacting Microsoft Support or your administrator.

Working with WPS Office: WPS as a Local Alternative

WPS Office cannot replace Microsoft account, activation, or cloud fixes for this scenario. It remains one of the best free Microsoft Office-compatible alternatives for opening and editing local files.

1. Download and install WPS Office from the official website.

2. Open local Word, Excel, PowerPoint, or PDF files in the matching WPS app.

3. Save a working copy locally while Microsoft-side issues are resolved.

4. Return to Microsoft Office after the primary fix succeeds.

If you need a practical local workspace in the meantime, try WPS Office.

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Prevention Tips for Keeping Office Stable Long Term

• Keep one primary Microsoft account for subscriptions and Office sign-in.

• Install updates for Office and Windows before retrying failed workflows.

• Back up important files before repair, reset, or reinstall actions.

• Register more than one MFA method and keep recovery contacts current.

FAQs About Office Support Questions

Can WPS Office fix this mfa & verification issues issue directly? Only when the WPS steps match the formatting or file task. Account, activation, and cloud issues stay on the Microsoft side.

Should I reinstall Office before trying these steps? Not first. Confirm account, license, and the exact error before reinstalling.

What should I send to Microsoft Support? The affected account email, device type, Office version, exact error text, and screenshots with personal data hidden.