Hkey-current-user Software Microsoft Office 16.0 Common Identity |best| -

If you use FSLogix Profile Containers for Office 365, ensure your RedirXML includes:

: Prevents Office from using WAM and forces it to use ADAL directly. Often used to fix persistent password prompt loops. DisableAADWam :

Before we discuss troubleshooting, let's parse the registry hierarchy: If you use FSLogix Profile Containers for Office

In the past, Office authentication was a relatively simple process, often relying on cached credentials or basic NTLM authentication against a local domain controller. Today, with the proliferation of Microsoft 365 and cloud services, Office uses (OAuth 2.0).

Perhaps the most common reason IT professionals seek out this registry key is to forcibly enable Modern Authentication or resolve conflicts where Office tries to use legacy authentication methods that have been disabled by the organization's security policies. Today, with the proliferation of Microsoft 365 and

Never use Windows Folder Redirection to move AppData\Local\Microsoft\IdentityCache or redirect HKCU\Software\Microsoft\Office\16.0\Common to a network share. The Identity key expects ultra-low latency access. Network latency will cause Office to freeze on save operations.

: Set to 1 to disable connected experiences that analyze your content. The Identity key expects ultra-low latency access

Set EnableADAL = 1 (DWORD) to ensure Office uses OAuth 2.0-based authentication (required for MFA and Conditional Access).