MFA & Verification Issues

Recover Microsoft 365 and OneDrive Access After Changing Phones

Huma Ashraf Ch Sep 29, 2026 869 views

Question details

The user needs to regain access to their Microsoft 365 account and OneDrive files after changing phones, which caused a loss of access to the Microsoft Authenticator app.

How to Recover Microsoft 365 and OneDrive Access After Changing Phones

Product: Microsoft 365, OneDrive
Device & OS: not provided
Scenario: Attempting to sign in to an existing Microsoft 365 account on a new device when the Microsoft Authenticator app is still tied to the old, inaccessible phone.
Observed behavior: The user is blocked from signing in due to multifactor authentication failure, preventing access to OneDrive files and potentially leading to subscription deactivation.

Before you start

Gather any alternate email addresses, backup phone numbers, or trusted devices previously used to log into your Microsoft account. Do not create a new account, as doing so will not grant you access to your original OneDrive files.

Solution 1Recommended

Recover a Personal Microsoft Account via Alternate Methods

Use this solution if you are trying to recover a personal Microsoft 365 account and have backup verification methods available.

If your Authenticator app is inaccessible, Microsoft allows you to verify your identity using secondary methods established during your initial account setup. Using a trusted device where you are already signed in can significantly speed up this process.

Navigate to the sign-in page

Go to the Microsoft 365 login page and enter your email address. When prompted to approve the sign-in via the Authenticator app, click on 'I can't use my Microsoft Authenticator app right now' or 'Sign in another way'.

Select an alternate verification method

Choose an alternate email address or phone number from the list to receive a security code. Enter the received code to verify your identity.

Update your security info

Once signed in, go to your Microsoft Account Security settings. Remove the old phone from your multifactor authentication methods and register your new phone using the Microsoft Authenticator app.

Reactivate subscription if needed

Navigate to 'Services & subscriptions' to update your payment method and reactivate your Microsoft 365 subscription if it was suspended due to missed payments.

Recover a Personal Microsoft Account via Alternate Methods

Account Recovery Form: If you do not have access to any backup methods, you will need to fill out the Microsoft Account Recovery form. This process can take up to 30 days to complete for security reasons.

Solution 2

Contact Your Organization's IT Administrator

Use this solution if your Microsoft 365 account is managed by a workplace or educational institution.

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Frequently Asked Questions

Will I lose my OneDrive files if my Microsoft 365 subscription is deactivated?

No. When a subscription expires or is deactivated due to failed payments, Microsoft retains your files for a grace period. Once you recover your account access and update your payment method, your OneDrive files will be fully accessible again.

Can I just create a new Microsoft account to access my old documents?

No. A new Microsoft account will have a completely separate OneDrive storage space. To access documents stored on your original account, you must complete the account-recovery process for that specific account.

How can I backup my Microsoft Authenticator app to prevent this in the future?

You can turn on Cloud Backup in the Microsoft Authenticator app settings. This securely backs up your account credentials to your personal Microsoft account, allowing you to easily restore your tokens when you sign into the Authenticator app on a new device.

Login & Account Issues