Excel Not opening

Occasional Visitor



When working on an excel, the system got off due to power failure, after turning on excel is not opening


I am getting the below error


excel cannot be open the file 'filename.xlsx' because the file format or file extension is not valid

1 Reply


First of all, I recommend that you carry out an update and then an Office repair.

If none of these help, here is a link with additional steps you could take.

Uninstall Office automatically

If you need to reinstall Office, select the version you want to install and follow those steps: Microsoft 365, Office 2019, Office 2016, Office 2013, Office 2010, or Office 2007.


Thank you for your understanding and patience



I know I don't know anything (Socrates)