Forum Discussion
cmflynn
May 29, 2026Copper Contributor
Add-in Error: We could't connect to the '{0}' catalog server for this add in
For the past month every time I try to use an Add-In in word I get the following error "we couldn't connect to the '{0}' catalog server for this add in." I have tried from multiple computers, Safari,...
examplifytherapeutics
Jul 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_Kenyon
Jul 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