Forum Discussion
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.
- examplifytherapeuticsJul 24, 2026Copper Contributor
I have same issue of "We couldn't connect to the (0) catalog server for this add-in" with multiple Addins.. Their support keeps blaming the add-ins, but since multiple add-ins have this issue, it's likely Microsoft's issue. To be particular I am having trouble with Mendeley Cite; Wikipedia etc
- Charles_KenyonJul 27, 2026Bronze Contributor
Were any of the Add-Ins downloaded through the Microsoft Store?
Have you asked the producers of the problem Add-Ins about the problem?
Feel free to download one of my Add-Ins and see if it causes the problem for you. Add-Ins