Hi, Sergio de Souza Xavier
Good day!
Thank you for posting to Microsoft Community. We are happy to assist you.
According to your description, I'm sorry to hear that you're having trouble logging in to your corporate email.
First of all, to get the IDs from the Microsoft Authenticator app, please try following steps and see if you can get it.
- Open the Microsoft Authenticator app on your device.
- Tap on the three dots in the upper right corner of the screen.
- Select "Settings" from the drop-down menu.
- Tap on "Accounts."
- Select the account for which you need the ID.
- The ID will be listed under "Account ID."
If you're still having trouble logging in after retrieving the ID, in this situation, would you like to reach out to the Microsoft Authenticator Tech Support team - Microsoft Authenticator Tech Support which they're dedicating into MS authenticator with rich experience and more resources than us.
We believe they would conduct in-depth of the given issue and provide you a more professional suggestion.
Thanks for your understanding and cooperation.
Sincerely,
Alex | Microsoft Community Moderator.