Disclaimer: Modifying the registry can be risky. Ensure you have backups and are confident in your changes. If you'd like, I can:
: Disables Modern Authentication, forcing Office to use older "Basic" authentication. Warning: This is generally not recommended as Microsoft is phasing out basic authentication. DisableADALatopWAMOverride : Disclaimer: Modifying the registry can be risky
| Value Name | Type | Example | Description | |------------|------|---------|-------------| | LastLoggedInUser | REG_SZ | user@contoso.com | Email address of the most recently signed-in user. | | DisableADALatopWAMOverride | REG_DWORD | 0 or 1 | Disables Web Account Manager (WAM) for AAD auth (used in troubleshooting). | | EnableADAL | REG_DWORD | 1 | Enables Modern Authentication (ADAL). Set to 0 to force Basic Auth. | | Version | REG_DWORD | 1 | Schema version of identity storage. | | ConfigFlags | REG_DWORD | 0 | Bitmask for various identity behavioral settings. | Warning: This is generally not recommended as Microsoft
Close Outlook, Word, Excel, Teams, and OneNote. | | EnableADAL | REG_DWORD | 1 |