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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:
24 Οκτ 2017 · 1. Change the file extension of your Excel sheet. Sometimes, the problem is seen due to the unsupported file extension of your Excel file. Try renaming the file and change it from .xlsx to .xls or vice versa. 2. Open Excel in Safe mode. Here's how: a. Right-click the Start button (lower-left corner) in Windows, and click Run. b.
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.
22 Ιαν 2023 · Sometimes, the problem occurs due to the unsupported file extension of your Excel file. Step 1. Open your Excel application and then tap the “File” tab. Hit the “Export” option from the list of menus and select the “Change File Type” option. Step 2.
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 giving error....
12 Αυγ 2023 · Updating File Extension. The most likely reason is that the file was saved in a format incompatible with your version of Excel. This is an easy fix and can be done by changing the file extension to .xlsx. You’ll want to access the File Explorer Developer Settings to update the appearance and set all files to show extensions.
