SIGN IN TO WORK ACCOUUNT SECURITY CODE ERROR

Follow these steps to troubleshoot the sign-in and Authenticator security code error for a work/school account:

1. Check if the issue is with MFA input
   • If the error shown is similar to “Sorry, our account verification system is having trouble,” it can be caused by invalid MFA input.
   • For phone call verification: when you receive the call, press the pound key (#) as instructed to complete verification.
   • For SMS verification: carefully enter the exact verification code received by text.
2. Try a different verification method
   • On the MFA prompt page, select Other verification options (or similar) and choose another method (call, text, or another registered method).
   • Ensure your phone numbers and methods are correct in your security verification settings once you can sign in.
3. If Authenticator on Android is failing
   • Make sure push notifications are enabled for Microsoft Authenticator.
   • Ensure Google Play Services and Google Play Store are installed and enabled.
   • Confirm the device requires a PIN or biometric (face/fingerprint) to unlock.
   • Ensure hardware encryption is enabled and the device is registered in Authenticator under Settings > Device Registration.
   • If you see errors like “We could not complete the sign-in at this time” or “Please ensure push notifications are enabled in Settings,” enable notifications and network connectivity, then remove and re-add the account in Authenticator if possible.
4. If multiple failed attempts have locked sign-in
   • Microsoft Entra multifactor authentication may temporarily block sign-in after many failed attempts.
   • Wait and try again later, or use a different MFA method if one is available.
   • If there is any suspicion of someone else trying to access the account, contact the organization’s IT administrator immediately and ask them to review Microsoft Entra sign-in logs.
5. If no method works and access is still blocked
   • For work/school accounts, contact the organization’s Help desk or IT admin and ask them to:
     • Clear or reset MFA settings for the account, or
     • Require re-registration of multifactor authentication so setup can be done again on the device.
   • If the account is the only admin account in a business tenant and access is completely lost, the tenant admin must contact Microsoft Support/Data Protection via the official customer service phone numbers so they can verify identity and reset MFA.

References:

• "Account verification system is having trouble" error message when you try to sign in by using a work or school account
• Troubleshoot problems with Microsoft Authenticator
• Common problems with two-step verification for a work or school account