If you cannot open an Excel file and see Excel cannot open the file because the file format or extension is not valid error, see this post.

Solving the “ Excel cannot open because the file format is not valid ” problem can sometimes be as simple as booting your computer into Safe Mode. This is especially effective when Excel is ...

[Bug]: Excel cannot be open the file because the file format or file extension is not valid ... Closed. Closed [Bug]: Excel cannot be open the file because the file format or file extension is not ...

excel cannot open the file because the file format or file extension is not valid ... Copy link. Open. Open. excel cannot open the file because the file format or file extension is not valid #357.

Sometimes, when you try to open a Word file it fails to open and displays the following message – Word cannot open the file because the file format does not match the file extension.This can be ...

In such cases there’s a mismatch in file formats which causes the file not to open. It is also possible that the file extension is not valid because it is not compatible with your version of Excel or ...

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 ...