error code: 1164926648 or [5ssai] when setting up email account on new mobile phone

Jon Attenburrow 25 Reputation points
2026-02-09T03:59:59.64+00:00

I am trying to set up an email account(A)on new Samsung S25+ phone (it was fine on previous S21FE phone i receive error code: 1164926648 or [5ssai] when setting up email account on new mobile phone. Subsequently i can successfully set up a second (B) email account but when i try and set up email account (A) still receive error code: 1164926648 or [5ssai]. I have tried uninstalling outllook restarting phone however issue persists. please help.

Outlook | Outlook for mobile | Outlook for Android | For home
Answer accepted by question author
Chloe-L 13,680 Reputation points Microsoft External Staff Moderator
2026-02-09T22:18:53.3166667+00:00

Dear Jon Attenburrow,

Thank you for posting your question to the Microsoft Q&A forum.

Error codes 1164926648 or [5ssai] typically point to a synchronization conflict between the Outlook app and the Identity Broker (Microsoft Authenticator) on Android devices. Please follow the steps below carefully to ensure you do not lose your credentials.

Step 1: Secure Your Credentials

Before modifying the Authenticator app, ensure your accounts are backed up so you can recover them easily.

  • Open the Microsoft Authenticator app.
  • Tap the three-dot menu (or settings icon) and go to Settings.
  • Ensure Cloud Backup (on personal accounts) or Backup is toggled ON.
  • Note: Verify you have a recovery email or phone number associated with the backup.

Step 2: Clear the Authentication Broker

  1. Uninstall the Microsoft Authenticator app from your S25+.
  2. Uninstall the Outlook app.
  3. Restart your phone. This is a critical step to clear the cached identity tokens from the system RAM.

Step 3: Sequential Reinstallation

The order of operations matters here to ensure the S25+ creates a new "Device Registration" for Account A.

  1. Reinstall Outlook.
  2. Attempt to add Account A first before adding any other accounts
  3. Reinstall Microsoft Authenticator from the Google Play Store.
  4. Sign in and Restore your accounts from the backup you created in Step 1.

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  1. Martin 0 Reputation points
    2026-05-12T08:12:08.87+00:00

    I followed your instructions to the letter and still got error code 5objp when I tried to add my email account before installing authenticator. What do you suggest i try next?

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  2. AI answer

    2026-02-09T04:00:06.67+00:00

    The error code 1164926648 or [5ssai] when setting up your email account on a new mobile phone may be related to several factors, including configuration issues or restrictions imposed by your organization if you're using a work account. Here are some steps you can try to resolve the issue:

    1. Check Email Settings: Ensure that the email settings (such as server settings, username, and password) for account A are correct. Sometimes, settings can differ between devices.
    2. Clear Cache and Data: Go to your phone's settings, find the Outlook app, and clear its cache and data. This can help resolve any corrupted data issues.
    3. Reinstall Outlook: Since you've already uninstalled Outlook, make sure to restart your phone before reinstalling the app.
    4. Check for Updates: Ensure that both your phone's operating system and the Outlook app are updated to the latest versions.
    5. Try Manual Setup: If Autodiscover is causing issues, try setting up the account manually using the server settings instead of relying on automatic configuration.
    6. Contact Support: If the problem persists, consider reaching out to Microsoft Support or your email service provider for further assistance.

    These steps should help you troubleshoot the issue with setting up your email account on your new Samsung device.

    AI-generated content may be incorrect. Read our transparency notes for more information.

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