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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 Φεβ 2024 · Rename the file extension to match the format of the file, such as .xlsx or .xls: 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. 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.
19 Ιουν 2021 · 1] Change the file extension. If you cannot open the Excel file from its location, simply open any Excel file and click the File tab. Then, go to Open > Browse and select the file...
2 Μαΐ 2024 · In this comprehensive guide, we’ve outlined eight practical solutions to the common Excel error: “Excel cannot open the file because the file format or file extension is not valid.” It’s best to start by verifying your file’s integrity and format, then methodically try each solution one by one.
Opening a text file in Excel does not change the format of the file — you can see this in the Excel title bar, where the name of the file retains the text file name extension (for example, .txt or .csv). Go to File > Open and browse to the location that contains the text file.
16 Ιουλ 2022 · File formats that are supported in Excel. If this does not help and the problem only occurs in this file, could you paste the file (without sensitive data) or. Perform repair steps such as... Repair a corrupted workbook. right after...not only if it didn't work. Install the latest update. Repair Office programs.
