PPKG didn't join device in Intune, although it should

Let's troubleshoot this Intune device enrollment issue systematically:

1. Preliminary Checks:

• Confirm MDM scope is set to "All"
• Verify the user creating the token has:
  • Proper Intune licenses
  • Azure AD joining permissions
  • Enrollment rights

1. Diagnostic Steps: 

# Check current MDM information
Get-MsolCompanyInformation | Select-Object *mdm*

# Verify Intune enrollment status
Get-MsolDevice -All | Where-Object {$_.DeviceTrustType -eq "Azure AD Joined"}  

1. otential Troubleshooting Areas:

• Recent Microsoft Updates: Check if there were any Intune or Azure AD Connect updates in late November/early December
• Verify Conditional Access policies
• Check Azure AD join and Intune enrollment logs:
  • Windows Event Viewer → Applications and Services Logs → Microsoft → Windows → DeviceManagement-Enterprise-Diagnostics-Provider
  • Microsoft Intune management extension logs
  • Azure AD Connect sync logs

1. Additional Verification:

# Check device registration status
dsregcmd /status

# Verify Intune enrollment
Start-Process "ms-device-enrollment:?mode=mdm"

1. Common Causes to Investigate:

• Token validity
• Licensing changes
• Conditional Access policy modifications
• Network/proxy configuration alterations
• Unexpected Windows updates