Hi klsl,
Sorry for the inconvenience it may have caused.
To troubleshoot the issue you encountered, there’re some suggestions you may take:
- Update Office to the latest version. With Office updated, some issues would get resolved. So it’s a good idea to keep Office up to date.
Open Excel in safe mode to exclude the issue is related to some third-party add-ins. Then check the result.
3. Perform Office Online Repair to fix the problem.
- Remove the PowerQuery Cache in the following path:
C:\Users*[UserName]*\AppData\Local\Microsoft\Office\16.0\PowerQuery
Remove all the content under this folder. This ought to reset the PowerQuery setting for Excel. After that, try to import the data again.
**Note:**1. The AppData folder is hidden by default.
- To prevent important data from being lost, please back up them when deleting the contents of the folder.
And we would like to collect some information to further check it:
- Which version of Office do you have? After starting Excel, click on File > Account, please take a screenshot of the Product Information part and share it with us.
- Whether the issue occurred on all workbooks? Or just some certain ones?
- If you have other SharePoint sites, try to test these sites in case the issue related to certain site.
- Please provide the detailed steps you take if possible.
Best regards,
Madoc