Add-in Error: We could't connect to the '{0}' catalog server for this add in

Hi,

I have more than thirty Add-Ins loaded.

This does not happen with any of the Add-Ins I've created. Here they are: Add-Ins

It does not happen with any of the Add-Ins I have that were written by Word MVPs.

It does not happen with any of the Add-Ins I've received through the Microsoft Store.

The problem is a product of how the Add-In is interacting with Word. It is an issue of the authors of the Add-In not being able to make it work with Word. 

It may be something that Microsoft changed. They usually notify developers of changes, I believe. However, it is an issue for the author of the Add-In to fix.

Would you care to specify the Add-Ins by name?

Were they obtained through the Microsoft Store?

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I am a fellow user with more than thirty years experience using Word. I do not work for Microsoft. I do not speak for Microsoft.