Updates to new article about errors when Office add-ins start

Author: Cloud-Writer

Office/Client/office-suite-issues/errors-when-office-add-ins-start

@@ -20,18 +20,25 @@ ms.date: 12/13/2025
 
 # Errors when Office add-ins start
 
-## Symptoms
+## Summary
+
+This article provides information about errors that might occur when Office add-ins "media/errors-when-office-add-ins-start/office-add-in-information-bar.png"
+
+## Errors generated by Office
+
 When Microsoft Office tries to start an Office add-in that uses a task pane, an error occurs, and the add-in doesn't start. In this situation, Office displays an error message in an information bar at the top of the task pane, as shown in the following screenshot.
 
 :::image type="content" source="media/errors-when-office-add-ins-start/office-add-in-information-bar.png" alt-text="Screenshot of the information bar displayed at the top of the task pane.":::
 
 > [!IMPORTANT]
-> This kind of error is generated by Office, not by the add-in. Unless the error message explicitly states otherwise, users should *not* contact the add-in provider. They should contact their Microsoft 365 administrator, instead.
+> This kind of error is generated by Office, not by the add-in. Unless the error message explicitly states otherwise, users should **not** contact the add-in provider. They should contact their Microsoft 365 administrator, instead.
 
 The following table lists the most common error messages that cause users to mistakenly contact the add-in provider.
 
 | Error text  |  Explanation |
 |---|---|
 |This Add-in uses features not supported by its add-in catalog.|For more information about this error, see [Deploy and publish Office Add-ins](/office/dev/add-ins/publish/publish#additional-publication-methods-for-the-add-in-only-manifest).|
-
-
+|We can't load this Add-in because its source catalog is not supported on your device.|For more information about this error, see [Deploy and publish Office Add-ins](/office/dev/add-ins/publish/publish#additional-publication-methods-for-the-add-in-only-manifest).|
+|Add-ins are disabled in this version of Word, Excel, and PowerPoint. Buy Microsoft 365 to enable add-ins.|The user opened an Office document and add-in in a non-subscription or reduced functionality version of Office, but the add-in uses Office features that are not supported in the user’s version.|
+|Office 365 has been configured to prevent individual acquisition and execution of Office Store Add-ins. <br/><br/>Microsoft 365 has been configured to prevent individual acquisition and execution of Office Store Add-ins.<br/><br/>Office 365 has been configured to prevent individual acquisition and execution of Add-ins from Microsoft AppSource.<br/><br/>Microsoft 365 has been configured to prevent individual acquisition and execution of Add-ins from Microsoft AppSource.<br/><br/>Office 365 has been configured to prevent individual acquisition and execution of add-ins.<br/><br/>Microsoft 365 has been configured to prevent individual acquisition and execution of add-ins.|These are all versions of the same error message. In addition to the situation that’s mentioned in the error text, this message is displayed in the following situation:<br/><br/>If user A installs an add-in to a document, and user B, who doesn't have permissions to that add-in, then opens the document, user B receives this error message.|
+|We can't start this add-in because it isn't set up properly.|For more information about this error, see [Deploy and publish Office Add-ins](/office/dev/add-ins/publish/publish#additional-publication-methods-for-the-add-in-only-manifest).|