Hi Steven,
Since your Office is not the latest version 1711(8730.2165), I’d like to suggest you update your Office to the latest version to see the outcome.
If you can edit query, to check whether this issue is related to add-ins, please open your file in safe mode(Hold CTRL key and click your workbook) to see the outcome. If you can
edit your query in safe mode, you can click File>Options>Add-ins to uncheck add-ins one by one to check which one caused this issue.
If you still can’t edit query, I’d like to suggest you repair your Office to check if this issue still exists. You can follow the steps to do that:
- Type this address Control Panel\All Control Panel Items\Programs and Features in File Explorer to find your program list.
- Right-click Microsoft Office 365 ProPlus>click change>Quick Repair.
- Click Online Repair if this issue still exists.
Besides, if this issue persists after Office repair, I’d like to suggest you
Completely uninstall Office 2016 with the easy fix tool and then reinstall it.
Please have a try and share with me your result.
Thanks,
Neo