A console application to assist enterprises with Office web add-in side loading in a centralized way. Office Web Add-ins should be installed using the Office 365 Administration page. However, there are cases where this may not work, or a small team will want to install an add-in for use within that team. This is where Sideloading becomes useful. It is detailed in this article: https://docs.microsoft.com/en-us/office/dev/add-ins/testing/sideload-office-add-ins-for-testing. This tool assists with sideloading in this method and allows for the ability to not only install, but update and install using this method.

Download the latest version of this tool from here.

To use this tool simply run this command:

Set-WebAddin -help

From the help screen you will find the details outlined in the following section.

This utlity is to allow enterprise organizations without Office 365 or centeralized add-in governance to be able to install web add-ins to users desktops, requiring no effort by the users to have the add-ins installed and available for use.

This utility provides the following options:

    -install        Installs the add-in
    -uninstall      Uninstalls the add-in
    -update         Updates the add-in
    -test           Installs the add-in (local only)
    -cleanup        Removes the add-in (local only)

You will also need to provide one or more of these switches with any of the above options:

    -installPath [local folder path]
    -manifestPath [centralized manifest XML file]
    -installedManifestFullname [full path to local manifest] (only with uninstall)

    NOTE: The install path folder MUST exist.

For sideload (local only) testing you can use these switches:

    -test -manifestPath [full path and filename to the manifest*]
    -cleaup -maifestPath [full path and filename to the manifest*]

NOTE: The manifest path must be on the local drive.

Once it has been sideloaded, your add-in will not load automatically. To load your add-in you will need to select it from the drop-down list of "Developer Add-ins" in the "My Add-ins" list on the Insert ribbon.

The following are some examples of usage:

• Set-WebAddin -install -installPath c:\add-in -manifestPath \\server\share\manifest.xml
• Set-WebAddin -install - installPath c:\add-in -manifestPath https://server/path/manifest.xml
• Set-WebAddin -uninstall -installedManifestFullname c:\add-in\manifest.xml
• Set-WebAddin -update -installPath c:\add-in -manifestPath \\server\share\manifest.xml
• Set-WebAddin -test -manifestPath c:\add-in\manifest.xml
• Set-WebAddin -cleanup -manifest c:\add-in\manifest.xml