Forum Discussion
Add-in Error: We could't connect to the '{0}' catalog server for this add in
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.
- cmflynnJun 04, 2026Copper Contributor
Same, I am still having the issue.
- Charles_KenyonJun 09, 2026Bronze Contributor
Have you reviewed my reply and that of Doug Robbins?
Which Add-Ins?
- cmflynnJun 09, 2026Copper Contributor
It happens with multiple. The one I was originally trying to use was Agiloft Astra but now I have tried others just to see if anything works and I get the same error with Gen Text AI Assistant, Adobe, Pro Writing Aid, etc. (I've tried all of the "popular" suggestions).