If you facing the error: "the workbook cannot be opened or repaired by Microsoft Excel because it is corrupted" - you are in the right place!

Here, you will find out:

reasons for the error4 methods of how khổng lồ fix ithow Excel Recovery can help you

Are you ready? Let"s read!


Reasons Excel cannot open a file

While working with Excel, you may see the message: Excel cannot open the file because the file format or tệp tin extension is not valid. This may occur for the following reasons:

The document is damaged or incompatible with the current version of Excel.The document was edited several times in different versions of Excel.The Excel tệp tin was received by gmail.

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If you still get an error message that Excel cannot open the file because the tệp tin format or tệp tin extension is not valid, there are some great methods lớn fix it!


Method 1.Change the tệp tin extension!

In all versions of Excel until 2007, documents were saved in the XLS format. But Excel since 2007 saves files in the XLSX format.

A mismatch between tệp tin extension and Excel version may cause the error “Excel cannot open the tệp tin because the file format or tệp tin extension is not valid”. Therefore, all you need is to lớn modify the tệp tin format & it will become available.

xuất hiện Excel &, on the taskbar, select File. Then select Options -> Export -> Change File Type.

You need lớn directly change the tệp tin extension depending on the version of Excel installed.

Check if the error “Excel cannot open the file” is resolved. If not, read on.


Method 2. Current version of Excel cannot open the file? The previous version can help!

Try to lớn restore Excel from the previous version. Select the damaged tệp tin with the right mouse button và clichồng Properties -> Previous Version. A list of previous versions will appear; you need lớn select the option you are interested in & click Restore.


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Use Excel previous version khổng lồ open the file

If you have enabled the autosave sầu feature in advance, you can safely use this method khổng lồ eliminate the error “Excel cannot open the tệp tin because the tệp tin format or tệp tin extension is not valid”.

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To vày this, go to the application and on the Taskbar cliông chồng on File, then select the Information with the left mouse button. A các mục of files that have sầu been automatically saved will appear. Right cliông xã on the tệp tin you need và select restore. You will be prompted to save it, create a new name, enable XLSX and cliông chồng Save.


Method 3. Excel cannot open the file? “mở cửa and Repair” feature will help you!

This is a built-in easy-to-handle MS Excel utility that allows you to correct the error excel cannot open the file because the tệp tin format or file extension is not valid.

Enter the Excel application & on the Taskbar cliông chồng File, select mở cửa from the menu, then click on your inaccessible tệp tin. Now click mở cửa & Repair.

As a result, you will no longer see the message of the workbook cannot be opened or repaired by microsoft excel because it is corrupted và you will be able khổng lồ use the file again.

If for any reason this method did not suit you, vị not worry, there is another proven method!

Method 4. Excel cannot open the file? Use sumuoi.mobi Excel Recovery!

sumuoi.mobi Excel Recovery is a great solution for you, as this software is designed specifically for recovering Excel files. And for sumuoi.mobi Excel Recovery, the Excel cannot open the tệp tin because the extension is not valid in Excel 2013 this is easier than ever.


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The software uses a danh sách of signatures associated with the Microsoft XLS, XLSX file format lớn accurately determine the beginning and end of each file. This product works in all versions of Windows, can recover files from all versions of Microsoft Excel (2003, 2007, 2010, 2013, năm nhâm thìn, etc.).

This software has a lot of additional functions that make the work in the installation convenient & understandable. For example, the Previews function before recovery, which is also không lấy phí, will help you khổng lồ select the necessary files for recovery & also ensure that they will be restored correctly. If you need the lademo version of the file or a specific header, you can use the “On the Fly” filter, thereby reducing the scanning time.