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,...
KK05
May 30, 2026Copper Contributor
I am now having this issue as well. One of my apps started acting up, and I could not delete it or add any new add-ins since. I have signed in and out several times. Uninstalled and reinstalled my Microsoft 365 several times. Checked my settings. Tried to get add-ins through Edge and Chrome. I have spent hours on this to no avail, and this has been totally unacceptable. I am not able to utilize my paid add-ins. FIX THIS!!!
Jun 07, 2026
No problem with Add-ins here so I would doubt very much that it is a problem caused by Microsoft.
Rather, the vendor of the Add-ins should provide support for their customers, which is what I do with the Add-ins that I supply.