Permanently Enable Com Port

Question

Some of my laptops have a certain COM Port disabled by default and users have to remember to enable them every day when logging into their computers. I was trying to find a way to permanently enable the COM port so it wouldn't disable again after a reboot.

I have attempted to create a Scheduled Task at start up with the PowerShell script below:

Get-PnpDevice -FriendlyName “Communications Port (COM1)” | enable-PnpDevice

The issue is that this command needs confirmation after the script is ran. Is there a way to permanently enable a COM port without a PowerShell script, or is there a way to get the command above to run and confirm the action?

It would not let me include a screenshot of PowerShell, below is the command I am trying to schedule to run and automatically confirm as well:

Windows PowerShell Copyright (C) Microsoft Corporation. All rights reserved. Try the new cross-platform PowerShell https://aka.ms/pscore6 PS C:\Users\USER> Get-PnpDevice -FriendlyName "Communications Port (COM1)" | enable-PnpDevice

Confirm

Are you sure you want to perform this action? Performing the operation "Enable" on target "Win32_PnPEntity: Communications Port (COM1) (DeviceID = "ACPI\PNP0501\1")".

[Y] Yes [A] Yes to All [N] No [L] No to All [S] Suspend [?] Help (default is "Y"):

Answer 1

Hello,

What is the start value of the serial service in the Registry?

Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Serial

Try setting this to 2.

Values described here.

https://learn.microsoft.com/en-us/dotnet/api/system.serviceprocess.servicestartmode?view=dotnet-plat-ext-8.0

If it still reverts to disabled, I would check for any group polices that could be affecting this.

try using gpresult to get a list of the policies.

Darrell

Answer 2

Hi CameronK96,

You can add the parameter -Confirm:$false to the Enable-PnpDevice cmdlet if you don't want to confirm it every time.

Get-PnpDevice -FriendlyName  "Communications Port (COM1)"|Enable-PnpDevice -Confirm:$false

Best Regards,

Ian Xue

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