I'm trying to deploy Word Add-ins on documents via WOPI hosted application using an On Premise Office Online server.

I have enabled addins on my OOS instance using following Powershell command:

Set-OfficeWebAppsFarm - OfficeAddinEnabled:$true

However when I open a document and click on Insert/Office Add-ins, I get the following error: Error: Please add or enable add-in catalogs from the Trust Center

My question is how do I access Trust Center and enable add-in catalogs?

1 Answer 1


The Trust Center is available in any Office application on the computer by navigating File | Options | Trust Center. Depending on whether you are using a network share as the catalog or a SharePoint catalog, you'll find detailed instructions at one of these articles:

In the future, please tag questions about Office Web Add-ins with office-js.

  • I have word of office online server without SharePoint, in my word online application not exist options in file menu. Sep 29, 2019 at 21:07
  • @AmirNorouzpour, Did you get a solution to host add-ins in Office Online Server hosted scenario? We are also trying to host add-ins in a web only OOS scenario Oct 6, 2020 at 16:22
  • @JoyGeorgeKunjikkuru I have not found a solution yet. Oct 6, 2020 at 19:55

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