2017年10月24日 · 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.

2025年1月14日 · Excel cannot open the file _____ beacuse the file format or file extension is not valid. verify that the file has not been corrupted and that file extension matches the format of the file. This file can be open on all other computer. I have disabled all the protection view. I have clicked "open and repair"

2024年11月4日 · "Excel cannot open the file '*******.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

2016年1月7日 · Excel Top Contributors: HansV MVP - Andreas Killer - Ashish Mathur - Jim_ Gordon - Bob Jones AKA: CyberTaz January 10, 2025

2024年10月29日 · 1: Checks the file extension and file type. If they do not match a warning message is displayed. 2: Checks the file extension and file type. If they do not match do not open the file. You can also refer to this site to try to fix the file. A file is in a different format than its extension indicates in Excel - Microsoft Support

2024年2月1日 · 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) Open any Office program and click on "File" in the top left corner.

Hi My name is André. I am an independent consultant. First thing that needs to be noted are the resources present in your file, for example, Xlsm contains macros and VBA, Xlsb are binary excel files, so if you come to use exclusive resources of this format, excel automatically saves in these formats. and as a rule, the last extension is what counts, so you can delete the first part of the ...

2023年7月27日 · Standard Excel workbook: .xlsx. Macro-enabled Excel workbook: .xlsm. Binary Excel workbook: .xlsb. Legacy Excel 97-2003 workbook: .xls

2017年10月19日 · You need to open the spreadsheet, select Save as from the menu and change the file type. By default Office 2007 saves in XLSX format. If you always want to save in XLS format you need to go to Excel options and change the file type to a previous file format.

2022年9月30日 · When the file is produced in the first application, it's definitely a CSV. File extension and everything. As soon as I try to download it from that first external application, the only option for file type in the dialogue box is "Microsoft Excel CSV file." Even if I open the file, then Save As, the file type remains "Microsoft Excel CSV file."