Choose the repair option to fix your corrupted Excel file. 4. Open the Excel file locally. Errors can also occur when an Excel file is stored in OneDrive and not synced locally. To resolve this, save ...

The first thing you should do here is to close all programs that are using the Excel file you are attempting to open. Please ensure the .xls file is not opened in other workbooks, add-ins, or apps.

Here’s how to use this feature to fix the “ Excel file extension not valid ” issue: 1. Open Microsoft Excel and go to the File tab . Then, select Open > Browse. Excel file opening options. 2. Find and ...

If corruption in an Excel file is the cause of the “The document cannot be saved” error, then you can use the inbuilt tool – “Open and Repair” to repair the file. To use the tool, follow the below ...

First try to rename file. Go to tools, folder options, file types and check have you .xlsx extension. If not then rename the file .xlsx to .xls. Second try to use excel command in file menu – Open and ...

Suppressing the warning lets Excel open the file without checking for format mismatches. This is useful if you trust the file and want to avoid repeated alerts. It keeps your work flowing, especially ...