Code: 1541091857

Question

Code: 1541091857

isaac 0

Hi there
can not log in to my ourlook app on my Android
Getting the below error message
Correlation Id: [Moderator note: personal info removed]
Timestamp: [Moderator note: personal info removed]
DPTI: [Moderator note: personal info removed]
Message: The operation attempted is invalid.
Tag: 5objp
Code: 1541091857
any idea?
Many thanks

Isaac

Alexis-NG 9,515 Reputation points Microsoft External Staff Moderator

2025-12-15T18:06:12.95+00:00

Hi @isaac,

I hope everything is going well on your end.

I’m following up on the support thread we've been working through together. I wanted to check in and see if the information I shared in my previous answer helped resolve the issue you were experiencing.

If you're still experiencing any issues or have further questions, please feel free to reach out at any time. I’m always happy to help if you need anything else.

We want to ensure everything is functioning smoothly and that your experience remains seamless.

Thank you again for your collaboration throughout the troubleshooting process.

I look forward to hearing from you soon.
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1 answer

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Alexis-NG 9,515 Reputation points Microsoft External Staff Moderator

2025-12-15T18:06:12.95+00:00

Hi @isaac,

I hope everything is going well on your end.

I’m following up on the support thread we've been working through together. I wanted to check in and see if the information I shared in my previous answer helped resolve the issue you were experiencing.

If you're still experiencing any issues or have further questions, please feel free to reach out at any time. I’m always happy to help if you need anything else.

We want to ensure everything is functioning smoothly and that your experience remains seamless.

Thank you again for your collaboration throughout the troubleshooting process.

I look forward to hearing from you soon.
Deleted

This comment has been deleted due to a violation of our Code of Conduct. The comment was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.

Answer 1

Hi @isaac,

Thank you for reaching out to Microsoft Q&A Forum.

The error code 1541091857 on Android is usually associated with the message “The operation attempted is invalid” and tag 5objp. It is commonly seen when adding a Microsoft 365 account to Outlook for Android (and sometimes Teams), especially after device migrations, app updates, or when cached credentials conflict with the authentication flow.

I'd recommend you clear your device cache credentials first to ensure proper sign-in:

Remove old accounts from device settings
- Go to Settings → Accounts and backup→ Manage accounts.
- Delete any duplicate or old Microsoft/Work accounts.
1. Clear Outlook app cache and data
  - Settings → Apps → Outlook → Storage → Clear Cache & Clear Data.
Reinstall Outlook
- Uninstall Outlook → Reboot → Turn off Auto Sync Data→ Reinstall from Play Store/App Store.
- You can find Auto Sync Data toggle under Settings → Accounts and backups → Manage accounts. It will be at the bottom of the Manage Accounts section.
1. Sign in using the full UPN format
  - For business accounts, use ******@domain.onmicrosoft.com or your organization’s domain.
  - This forces a fresh authentication session.

I hope this information is helpful. Please follow these steps and let me know if it works for you. If not, feel free to share them in the comments on this post so I can continue to assist you.

I look forward to hearing your thoughts on this.

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Code: 1541091857

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