Can't sign in to 365 copilot on my Android tablet

Question

I have a family subscription but when I try to sign in on my tablet I get this error message:

Correlation Id: [Moderator Note: Personal Info Removed] 

Timestamp: [Moderator Note: Personal Info Removed] 

DPTI: [Moderator Note: Personal Info Removed] 

Message: An unexpected error occurred.

Tag: 4mmex

Code: [Moderator Note: Personal Info Removed] 

I have uninstalled and tried again, same message. I have tried the useless sign in help tool which just says that there is nothing wrong with my account. Now I'm left paying for a subscription that I can't use. Any help from a real person appreciated!

Answer 1

Hello Lee,

Please note that our forum is a public platform, and we will modify your question to hide your personal information in the description. Kindly ensure that you hide any personal or organizational information the next time you post an error or other details to protect personal data.  

Thank you for reaching out to Microsoft Q&A forum

I understand that you have a family subscription, but when you try to sign in on your tablet, you get error message: "An unexpected error occurred. Tag: 4mmex"

Here are some additional troubleshooting steps for you to try:

Try signing in via browser first to forces a sign in token creation

• Open a browser on your tablet
• Go to:[ https://www.office.com]
• Sign in successfully there, but do not log out
• Immediately open the Microsoft 365 / Office app and try sign in again

If the method above doesn't work, you can try removing all Microsoft accounts from your tablet:

• Android Settings > Passwords & accounts
• Remove Microsoft account and Outlook account
• Reboot the tablet
• Install Microsoft 365 (Office) fresh
• Sign in again

Reply back to this post if you need further assistance, I'll be happy to help.