Forum Discussion
Error loading add-in ... while manifest is ok
I developped an Excel web addin with an aspnet core 6.0 API and published it on a dedicated server on Azure. Excel raise an "Error loading add-in" error when the complement is installed on Excel. P...
Here are some simple troubleshooting steps for the "Error loading add-in" issue:
Check Manifest URL: Make sure the URL in your manifest file is correct and can be accessed from Excel.
Network Settings: Ensure your server allows traffic from Excel and that there are no firewall issues.
SSL/TLS: If you're using HTTPS, make sure it's set up correctly with a valid certificate.
Server Logs: Look for any errors or warnings on your server that might explain the issue.
Excel Logging: Enable logging in Excel to get more details about the problem.
Excel Version: Make sure your Excel version is compatible with your add-in.
Test on Another Machine: Try your add-in on a different computer to see if the problem persists.
Revalidate Manifest: Double-check your manifest file for any mistakes.
