MFA & Verification Issues

Fix Cannot Sign In to Microsoft Office After Security Info Change

Chanuka Geekiyanage Oct 10, 2026 869 views

Question details

The user is unable to sign in to Microsoft Office because the old verification email or phone number is inaccessible, and updating the security information triggers a mandatory 30-day waiting period.

Cannot Sign In to Microsoft Office After Changing Security Information

Product: Microsoft Office
Device & OS: not provided
Scenario: Attempting to sign in to a Microsoft Office account when the registered security contact methods are no longer available.
Observed behavior: The sign-in process is blocked, and replacing the obsolete verification methods places the Microsoft account in a restricted security-change state for 30 days.

Before you start

Check if you are still signed in to your Microsoft account on a trusted computer or mobile device, as this may allow you to access your files locally while the account is restricted.

Solution 1Recommended

Complete the Security Replacement and Wait 30 Days

Because the 30-day security lock cannot be bypassed, you must complete the replacement process and wait out the period to regain full account access.

Microsoft enforces a mandatory 30-day waiting period whenever all security info is removed and replaced. This is an automated safeguard designed to protect your account from unauthorized takeovers.

Customer support cannot expedite or bypass this waiting period. While your account is in this restricted state, you cannot make further security changes, though you can often still access your Outlook email and Office applications on devices where you are already signed in.

Initiate sign in

Go to the Microsoft Office sign-in page and enter your account email and password.

Select missing security info

When prompted to verify your identity with a code, click on the 'I don't have any of these' option from the list of old verification methods.

Add new verification method

Follow the on-screen prompts to enter a new, accessible phone number or alternative email address.

Verify the new method

Enter the security code sent to your newly added phone number or email address to confirm the change.

Wait for the restriction to lift

Allow 30 days to pass. Microsoft will notify you at your new security contact when the waiting period is over and your account is fully unlocked.

Complete the Security Replacement and Wait 30 Days

Prevent Future Lockouts: Once your access is fully restored, navigate to the Microsoft Security dashboard and add at least two or three active verification methods (such as an authenticator app and a secondary email) to ensure an alternate method is available if one is lost.

Free Microsoft Office alternative

Use WPS Office to Edit Your Files During the 30-Day Lockout

If you are locked out of your Microsoft account and urgently need to work on your documents, WPS Office is an excellent free alternative. It allows you to open, edit, and save your existing files locally without requiring a Microsoft account sign-in.

1. Download the software: Visit the official WPS Office website and download the free installation package for your operating system.
2. Install WPS Office: Run the installer and follow the simple on-screen instructions to set up the software on your computer.
3. Open your existing files: Launch WPS Office and click 'Open' to browse for your existing Word, Excel, or PowerPoint files and continue your work seamlessly.

Access and edit local documents without waiting for the 30-day account unlockFully compatible with Microsoft Office formats like .docx, .xlsx, and .pptxNo mandatory cloud account sign-in required for basic editingLightweight installation with a familiar, easy-to-use interface

microsoft office alternative - wps office

Frequently Asked Questions

Can I cancel the 30-day security info replacement request?

Yes, if you made the request by mistake or suddenly regained access to your old verification method, you can cancel it. Go to the Microsoft account security page, sign in, and click 'Cancel this request', then verify your identity using your old security info.

Will I lose my files during the 30-day waiting period?

No, your files stored on OneDrive and your emails remain intact. The 30-day restriction only prevents you from changing security settings or signing in to new devices. You can still access files on devices where you are already signed in.

Why does Microsoft force a 30-day wait for security changes?

This waiting period is a strict anti-hacking measure. If a malicious actor gains access to your password, they might try to change your security info to lock you out. The 30-day delay gives the legitimate owner enough time to receive notifications and cancel the unauthorized change.

Login & Account Issues