How to Fix the Error "This add-in is no longer available"

This article details a step-by-step guide to fixing the error "This add-in is no longer available".

Overview

In some cases, Templafy's Demo Web Add-in was utilized by customers. The add-in has been deactivated, and if it is still utilized it will show the following error.

Resolution

To fix the error indicated above, follow the steps below:

1. Go to the Microsoft 365 Admin Portal
2. Click Settings
3. Click Integrated apps
4. Remove the existing Templafy Web Add-in

Then, to deploy your tenant-specific Web Add-in:

1. Follow the steps to generate the new XML Manifest File
2. Go to the Microsoft 365 Admin Portal
3. Click Settings
4. Click Integrated apps
5. Under App type select Office Add-in
6. Select Upload manifest file (.xml) from device and click Choose File
7. Browse location of the manifest file (.xml) for upload, select it and click Open
8. Select which Users/Groups should have access (or Everyone) and click Next
9. Accept permissions request by clicking Next
10. Click Finish deployment to begin the deployment of the add-in