Lattice Outlook 'Need Admin Approval' Error
Workaround available Web (Microsoft 365 / Outlook) Updated October 21, 2026
Quick answer
This error appears when your Microsoft Entra ID tenant blocks users from consenting to third-party apps. A Microsoft admin has to connect Outlook in Lattice once and accept the permissions; then everyone else can connect.
Most likely fix: Have a Microsoft admin grant consent.
Symptoms
When connecting a 1:1 to Outlook, Microsoft shows 'Need admin approval' instead of the permission screen.
Why it happens
- Entra ID (Azure AD) user consent for third-party apps is disabled
- The Lattice Enterprise Application is missing required permissions
How to fix it
Try these in order — the most common fix is first.
1. Have a Microsoft admin grant consent
- Ask a Microsoft 365 / Entra ID administrator to sign in to Lattice
- Go to 1:1s and connect Outlook
- Accept the requested permissions for the organization
- Other users can now connect without the error
2. Verify the app permissions
- In Entra ID open Enterprise applications > Lattice
- Confirm it has Calendars.Read, offline_access and openid
- Retry connecting Outlook from the 1:1's settings
This guide also covers
- lattice need admin approval
- lattice outlook admin approval
- lattice outlook integration error
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