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1. Install the OfficeWebAddInManagement module:
   Open PowerShell with administrative privileges and run the following command:

   Code Block
   language powershell
   Install-Module -Name OfficeWebAddInManagement -Scope CurrentUser

2. Import the module:
   After the module is installed, import it using:

   Code Block
   language powershell
   Import-Module OfficeWebAddInManagement

3. Install the Outlook Add-in from the XML manifest file:
   Use the New-OfficeWebAddIn cmdlet to install the add-in. Provide the path to the XML manifest file as an argument.

   Here’s the syntax:

   Code Block
   language powershell
   $manifestPath = "C:\\path\\to\\your\\manifest.xml" New-OfficeWebAddIn -Manifest $manifestPath -Mailbox (Get-Mailbox -Identity "user@domain.com")

   Replace "C:\\path\\to\\your\\manifest.xml" with the actual path to your XML file and "user@domain.com" with the email address of the mailbox where you want to install the add-in.

Example Script

# Install the module (run as admin)
Install-Module -Name OfficeWebAddInManagement -Scope CurrentUser

# Import the module
Import-Module OfficeWebAddInManagement

# Define the path to the XML manifest file
$manifestPath = "C:\path\to\your\manifest.xml"

# Define the mailbox (user email address)
$mailbox = Get-Mailbox -Identity "user@domain.com"

# Install the Outlook Add-in
New-OfficeWebAddIn -Manifest $manifestPath -Mailbox $mailbox

Note

• Ensure that you have the necessary permissions to install add-ins for the specified mailbox.

• This script assumes that you are running it in an environment where the Exchange Online PowerShell module is available and you have already connected to your Exchange Online environment.

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