MFA & Verification Issues

Fix Microsoft Authenticator Crashing on Android Devices

Khadija Khan Oct 10, 2026 870 views

Question details

The user needs to resolve an issue where the Microsoft Authenticator app immediately crashes upon being unlocked, even though background push notifications remain functional.

How to Fix Microsoft Authenticator Crashing on Android

Product: Microsoft Authenticator
Device & OS: Android
Scenario: Attempting to open the Microsoft Authenticator app to access 2FA tokens or approve a sign-in request.
Observed behavior: The application force-closes or crashes immediately after the user unlocks the app UI, rendering the local tokens inaccessible while push notifications continue to trigger in the background.

Before you start

Before clearing app data or reinstalling the authenticator, verify that you have alternative multi-factor authentication (MFA) methods set up (such as SMS, email, or backup codes) to avoid getting locked out of your accounts.

Solution 1Recommended

Clear App Cache and Check for Conflicts

This method resolves temporary software glitches and conflicts without deleting your locally stored MFA accounts.

Often, background security apps or a corrupted temporary cache can cause Microsoft Authenticator to crash upon loading its user interface. Clearing the cache is safe and will not wipe your configured accounts.

Install Pending Updates

Open the Google Play Store, search for Microsoft Authenticator, and tap 'Update' if a newer version is available. Additionally, check your Android device settings for any pending system updates.

Clear the App Cache

Navigate to your Android device Settings, tap on 'Apps' or 'App Management', and select 'Microsoft Authenticator'. Tap on 'Storage', then select 'Clear Cache'. Do not tap 'Clear Data', as that will erase your accounts.

Disable Conflicting Security Apps

Temporarily disable any third-party antivirus, app-lock, or aggressive battery-saving applications, then attempt to open Microsoft Authenticator again.

Restart Your Device

Hold down the power button on your Android device and select 'Restart' to apply all changes and refresh the system memory.

Safe Troubleshooting: Clearing the cache only removes temporary files. Your multi-factor authentication tokens remain safe as long as you do not clear the app data or uninstall the application.

Solution 2

Reinstall Microsoft Authenticator (Last Resort)

If the app remains completely unusable, reinstalling will replace corrupted core files, though it carries a high risk of account data loss.

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Frequently Asked Questions

Will uninstalling Microsoft Authenticator delete my configured accounts?

Yes, uninstalling the app or tapping 'Clear Data' will permanently remove all locally stored MFA tokens. Unless you have cloud backup enabled before the crash, you will lose access and need to re-register those accounts.

Why do push notifications work but the app crashes when I open it?

Push notifications are handled in the background by Google Play Services. When you tap the notification or open the app, it attempts to load the local user interface and the secure vault. Corrupted local storage or a bug in the app's biometric unlock sequence typically causes this specific UI crash.

How do I regain access to my accounts if my backup is empty after reinstalling?

If you lost your accounts and have no valid backup, you must use alternative sign-in methods (such as SMS codes or backup recovery codes) to log in. For work or school accounts, you will need to contact your organization's IT administrator to request an MFA reset or re-registration.

Login & Account Issues