Problem:
Users are facing integration and login problems on Outlook Desktop when connecting to Microsoft 365.
Possible Causes:
1. Outdated Outlook Desktop Version:
- You may be using older versions of Outlook that don't support modern authentication (OAuth2).
2. Cracked Outlook Desktop Versions:
- Integration issues may occur if you are using cracked or unofficial versions of Outlook.
3. Credential Mismatch:
- You may be entering incorrect login credentials, such as their email address or password.
Troubleshooting Steps:
Step 1: Check Outlook Version:
- Check your Outlook version. Ensure you are using the latest, officially supported version that includes OAuth2 authentication.
Step 2: Upgrade Outlook:
- If you are on an older version, please update to the latest official version provided by Microsoft.
Step 3: Authenticate Using OAuth2:
- Log in using OAuth2 for secure and modern authentication instead of using SMTP/IMAP.
Step 4: Remove Cracked Versions:
- Suggest you against using cracked or unofficial versions of Outlook. These versions pose security risks and may lack essential features.
Step 5: Clean Installation:
- Recommend a clean installation of the official Outlook application to ensure all components are properly configured.
Step 6: Microsoft Support Assistance:
- If issues persist, suggest you reach out to Microsoft Support for further help in resolving problems.
