File Recovery

Excel cannot open the file ‘filename.xlsx’ because the file format or extension is not valid

Encountering a blocked workbook due to an invalid format or extension alert can bring your operations…

“We found a problem with some content in ‘filename.xlsx'”: Using the Open and Repair tool

Seeing the “We found a problem with some content” alert means Excel has detected corruption inside…

Excel File Corruption and Save Failures: Causes and Recovery Paths

When Excel refuses to open a workbook or unexpectedly aborts a save process, you have moved…