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1 Φεβ 2024 · Right-click on the Excel file then go to properties > General tab > Rename the file extension. Repair your Excel file: Repair a corrupted workbook - Microsoft Support. Change Trust Center settings: 1) Open any Office program and click on "File" in the top left corner. 2) Click on "Options" at the bottom of the left-hand menu.
When you open a file in Excel, you get an message that the file name extension doesn't match the actual file format. For example, the file has an .xlsx file name extension but it's really a text file and should have a .txt file name extension.
1. I am at work and having problems opening an excel file. I continue to get the error: Excel cannot open the file XXX.xlsx" because the file format or file extension is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file.
15 Ιαν 2021 · Resetting the Excel file associations will restore Excel to its default settings, undoing any damaging alterations to the program. In most cases, that can help resolve all issues and ensure the program is running smoothly once again.
When Microsoft Excel detects a corrupted workbook upon opening, it automatically starts File Recovery mode and attempts to repair the workbook. If File Recovery mode doesn’t start, try using this manual process to recover your workbook: Click File > Open. Click the location and folder that contains the corrupted workbook.
19 Ιουν 2021 · A common error message that usually occurs when someone tries to open an Excel file in Windows is Excel cannot open the file because the file format or extension is not valid. Make sure the...
4 Ιουλ 2020 · Try to open your corrupt file in safe mode. Press Windows+R and write excel.exe /safe and click OK. Good Luck. 1 Like. devindaoson1991. replied to Muthu69.
