Set NewMessageSignature with Powershell without using Word

Question

So far, the only way I've found to change the default New Message Signature in Outlook is by instantiating Word:

$MSWord = New-Object -COMObject word.application 
$MSWord.EmailOptions.EmailSignature.NewMessageSignature="New Default"
$MSWord.Quit()

I don't fully understand what this snippet is doing, but it works.

The script is run at user Logon with a GPO, and results in Outlook's login prompt appearing for a few seconds while the value is being updated.

Is there a way to update this value without the user seeing a login prompt?

Answer 1

Hi,

You can try the PSWriteWord module if you don't want to use the Word COM object.
https://www.powershellgallery.com/packages/PSWriteWord

This could be helpful.
https://office365itpros.com/2020/02/19/updating-outlook-signature-powershell/
Please note: Information posted in the given link is hosted by a third party. Microsoft does not guarantee the accuracy and effectiveness of information.

Best Regards,
Ian Xue

============================================

If the Answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.