There are several reasons why a SharePoint list may not export to Excel-
- Browser compatibility: Ensure that you are using a supported browser for exporting SharePoint lists to Excel. Maybe try using Microsoft Edge.
- File size limitations: SharePoint has limitations on the size of files that can be exported to Excel. If your list contains a large number of items or has a significant amount of data, it may exceed the file size limit for exporting.
- Network and Server issues: Sometimes, temporary network or server issues can prevent SharePoint list exports. If you are experiencing issues with the export feature, try exporting the list at a later time to see if the problem resolves itself.
- Permission: Check if you have the necessary permissions to export the SharePoint list to Excel. Ensure that you have at least Read access to the list and the necessary permissions on the site level.
If none of these solutions work, I'd suggest you reach out to your SharePoint administrator or Microsoft support for further assistance.