If you receive Microsoft Excel cannot access the file, There are several possible reasons error message you can use the following suggestions to resolve the issue.

To fix the Unknown error trying to lock file in Teams, Excel, OneDrive, PowerPoint, SharePoint, etc, Office apps use these proven solutions.

Windows says your file is in use because it's open in another program? Learn how to force rename, delete, or move the file.

Excel displays a warning message that the file format and extension don’t match (HTML table and XLS), but allows the user to open the file anyway.

If you've ever tried to delete or use a file but gotten an error saying it was in use by another program—even if you've already closed it—OpenFilesV ...

Microsoft Excel will now disable blocked file types from workbook links by default The files will either fail to refresh or show a #BLOCKED error ...