If DirectAccess does not appear in the list, open an elevated PowerShell window and restart the Network Connectivity Assistant service (NcaSvc) using the following command.
Restart-Service NcaSvc
If you receive the error “Failed to start service ‘Network Connectivity Assistant (NcaSvc)‘”, ensure that the client operating system is Enterprise or Education edition. The NCA service will always fail to start on Professional edition as it is not a supported DirectAccess client.
Log Collection
The DirectAccess NCA also provides access to crucial troubleshooting information. Clicking on the Collect button creates a detailed diagnostic log file that is often helpful for troubleshooting DirectAccess connectivity issues.
If you cannot collect log:
To resolve this issue, open an elevated PowerShell window and enter the following command.
New-ItemProperty -Path “HKLM:\SYSTEM\CurrentControlSet\Services\NcaSvc\” -Name SvcHostSplitDisable -PropertyType DWORD -Value 1 -Force
The computer must be restarted for this change to take effect