HOW TO set NAV Service Startup Type via PowerShell

When you create a new Instance using the command New-NAVServerInstance it will set the Startup Type of the NAV Service as “Automatic” by default.

I haven’t found any NAV command to change it, so let us think about NAV Service as any other Windows Service.

In PowerShell there is a command Set-Service that allows to change an existing Service.

NAV Service names have the following format


where <ServerInstance> is the name of the NAV Instance

So running the following command we can change the Startup Type to Automatic, Manual or Disabled.

Set-Service –Name "MicrosoftDynamicsNavServer`$DynamicsNAV100" –StartupType Manual

This example will set the NAV Service for the Server Instance DynamicsNAV100 to Manual.

Unfortunately -StartupType parameter does not have a value for Automatic (Delayed Start)

So it seams a bit tricky but just looking into the register I’ve noted that the other services that had Automatic (Delayed Start) as Startup Type have a REG_DWORD value called “DelayedAutoStart” with value 1 under HKLM\System\CurrentControlSet\Services\

So the idea is use the previous command to set the Startup Type to Automatic then add REG_DWORD via script

Set-Service –Name "MicrosoftDynamicsNavServer`$DynamicsNAV100" –StartupType Automatic
Set-ItemProperty -Path "Registry::HKLM\System\CurrentControlSet\Services\MicrosoftDynamicsNavServer`$DynamicsNAV100" -Name "DelayedAutostart" -Value 1 -Type DWORD

In reality we could setup everything from the registry

Set-ItemProperty -Path "Registry::HKLM\System\CurrentControlSet\Services\MicrosoftDynamicsNavServer`$DynamicsNAV100" -Name "Start" -Value 2 -Type DWORD
Set-ItemProperty -Path "Registry::HKLM\System\CurrentControlSet\Services\MicrosoftDynamicsNavServer`$DynamicsNAV100" -Name "DelayedAutostart" -Value 1 -Type DWORD

NOTE 1: Both scripts will work only if the current Startup Type is different of Automatic
NOTE 2: “DelayedAutostart” DWORD will have effect only if you setup the Service Type as Automatic.

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