Forum Discussion
Add-ins not working
Hi team, I am unable to use Add-ins. I have used two AI chatbots to troubleshoot and understand the issue, and I spoke to two Microsoft support people, the second of whom advised me to raise the ...
Seems a well-known issue:
- Catalog service outage or instability: Microsoft AppSource or the Office Add-ins catalog may be temporarily unavailable. The unresolved {0} placeholder in the error message indicates a platform-level issue rather than a specific add-in.
- Account-level restrictions: Some Microsoft 365 Personal/Family accounts may have limited access to the catalog.
- Privacy settings: If Connected Experiences are disabled, Office cannot connect to the catalog.
- Network/security filters: VPNs, proxies, ad blockers, or strict firewall rules can block catalog connections.