Do you get an error message: Excel cannot open the tệp tin **.xlsx because the file format or tệp tin extension is not valid? Quichồng fixes và advanced solutions are offered here khổng lồ help you fix this error on Microsoft Office 2007, 2010, 2013, or năm 2016. Besides, if you lost Excel files, you can tải về bdkhtravinch.vn data recovery software lớn get additional help.Quý khách hàng đã xem: File excel bị lỗi file format not valid




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3 Fixes for Excel Cannot mở cửa the File Because the Extension Is Not Valid

The tệp tin format of an Excel worksheet is .xlsx or .xls. Whenever the user opens any tệp tin, it is opened with the same extension. However, some users may encounter an error when trying to open or edit an Excel file in Office 2003, 2007, 2010, 2013, năm 2016, 2019, and 365. The error message displays, "Excel cannot open the tệp tin because the extension is not valid".

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This article will provide you with three effective sầu solutions to resolve sầu excel cannot open the file because the tệp tin format or file extension is not valid. You can change the file extension, use the Office repair utility, or use one of the best data recovery software to repair Excel files. 

Workable SolutionsStep-by-step Troubleshooting
Fix 1. Change File Extensionmở cửa Microsoft Excel & go khổng lồ "File" > cliông xã Export and choose Change File Type...Full steps
Fix 2. Use mở cửa và RepairStart Office Excel > click File and xuất hiện > select the inaccessible Excel file...Full steps
Fix 3. geektechreviews.com File Repair ToolLaunch geektechreviews.com Data Recovery Wizard, và then scan the corrupted or damaged Excel files...Full steps

Error "Excel Cannot xuất hiện the File Because The File Format or File Extinction Is Not Valid"

Sometimes, when you try lớn open or edit an Excel file on Microsoft Office 2003, 2007, 2010, 2013, năm nhâm thìn, 2019, or 365 you may encounter the following problem:

"Excel cannot open the file "filename.xlsx" because the file format or file extension is not valid. Verify that the file has not been corrupted & that the file extension matches the format of the tệp tin."


It usually indicates the tệp tin is not compatible with the Excel version of the tệp tin that has come corrupt or damaged. Here, we will show you all the possible solutions, & you can try them respectively until fixing the issue. Before you take the solutions, kiểm tra whether Excel can be used normally.

Step 1. Press Windows+R key, type excel.exe /safe, và click "OK". Loading Excel without templates & add-ins allows you to see if the program works as it should or if it is corrupted.

Step 2. If Excel opens normally, kiểm tra for any add-ins that are causing problems in Excel. Disable the add-ins và click on the "OK" button. Then, restart Excel to lớn kiểm tra if the problem is fixed. If not, move sầu on to the fixes below.


There are three useful solutions in total khổng lồ solve the Excel cannot open file issue. Besides, two methods are provided lớn recover Excel when the file format or tệp tin extension is not valid. 

Fix 1. Change the Excel File Extension to lớn Open It

Many times, this error occurs due to the incompatible tệp tin extension of the Excel file. MS Excel saves Excel workbooks as XLSX or XLS files by default. Excel 2003 và earlier versions save files lượt thích XLS, whereas Excel 2007 and later versions lượt thích Excel 2010, Excel 2013, Excel 2016, và 2019 save files in XLSX file format. You can change the mặc định tệp tin format for the corresponding Excel version khổng lồ any other file format supported by MS Excel.

Step 1. Open Microsoft Excel và go khổng lồ the "File" tab.

Step 2. Click "Export" and choose "Change File Type".

Step 3. Change the tệp tin extension khổng lồ any other file format that MS Excel supports and cliông xã "Save As". Then, Cheông chồng if Excel can open your tệp tin or not.

Fix 2. mở cửa Excel File Using the Open và Repair Feature

The "xuất hiện và Repair" is a built-in easy-to-handle MS Excel utility that allows you to lớn correct the error Excel cannot open the tệp tin because the tệp tin format or file extension is not valid.

Step 1. Start Office Excel. On the File menu or the Microsoft Office button, click "Open".

Step 2. In the Open dialog box, clichồng to select the inaccessible Excel file.

Step 3. Cliông xã the down arrow on the Open button, & then clichồng "Open và Repair". Microsoft Office will then start lớn kiểm tra the Excel document and repair problems or corruption it found. 

Fix 3. Use geektechreviews.com File Repair Tool lớn Fix Excel Cannot xuất hiện the File

If the "Excel cannot open the tệp tin because the extension is not valid" problem is caused by file corruption rather than tệp tin compatibility, you need a professional tệp tin repair program khổng lồ help you fix the problem. 

bdkhtravinc.vn Data Recovery Wizard is an all-in-one tool that can help recover deleted files & restore corrupt files easily and efficiently. It can help to lớn repair corrupted JPEG/JPG or recover damaged MP4 and MOV files on both Windows và Mac computers. This professional MS Office Excel file repair tool has the following salient features.

Why You Choose geektechreviews.com Data Recovery Tool

Recover corrupted Excel files in XLSX/XLS formatsRepair single or multiple Excel tệp tin without quantity limitSupports MS Excel 2019, 2016, 2013, 2010, 2007, 2003, XP, 2000, 97, and 95 versionsReal-time pReview of repairing corrupted Excel file

Now, tải về the bdkhtravinch.vn MS Office document repair tool và follow the step-by-step guides below lớn repair damaged Excel files with three steps.

Step 1. Select a location lớn start finding corrupted Excel files

Launch geektechreviews.com Data Recovery Wizard, and then scan the corrupted or damaged Excel files.

Step 2. Scan for the corrupted Excel document

Step 3. Repair and save sầu the Excel tệp tin to lớn a secure location

Double-clichồng the corrupt excel file, and this program will automatically repair corrupted và damaged Excel files. Clichồng "Recover" to lớn save the repaired Excel files lớn a safe location.

Xem thêm: Cách Khắc Phục File Excel Bị Lỗi Không Mở Được File Excel, Cách Xử Lý Lỗi File Excel Không Mở Được

Recover Excel File When the File Format or File Extension Is Not Valid

If your unsaved Excel tệp tin cannot be opened because the tệp tin format or tệp tin extension is not valid, how khổng lồ recover unsaved Excel files? Try the two ways below. 

1. Restore Unsaved Excel Wordbook from Previous Versions

This method can only restore lost files khổng lồ a previous version. It means that you may thất bại some changes you may have sầu made lớn the document.

Step 1. Right-click the inaccessible Excel document and choose "Properties".

Step 2. Open the "Previous Version" tab to lớn các mục all the previously stored versions of the Excel file.

Step 3. Choose the right version và click "Restore" to lớn retrieve sầu the document.

2. Restore Unsaved Excel File Using AutoRecover

This method only works when you have sầu turned on the AutoSave sầu feature in Office Excel. And it"s also helpful for recovering unsaved Word documents. 

Step 1. mở cửa Office Excel & go to the "File" tab > clichồng "Info".

Step 2. Besides Manage Versions, you"ll see all autosaved versions of your file.

Step 3. xuất hiện the tệp tin in Excel and click "Restore". 

Step 4. Save the tệp tin with another tệp tin name & mix the extension as .xlsx.

Worthy Tips to Prevent Excel File from Loss

There are many ways to prsự kiện data loss. If you have lost important Excel files due lớn careless deletion, hard drive sầu formatting, or virus attachồng, you can use the data recovery tool to lớn retrieve lost data. There is another crucial point khổng lồ avoid data loss, which is backing up your Excel tệp tin at any time. 

1. Recover Deleted or Lost Excel File with File Recovery Software

Except for restoring unsaved Excel caused by Excel crashes when saving or other reasons, many users need to recover lost excel spreadsheets caused by accidental deletion, OS crash, hard drive sầu damaged/corrupted, or lost partition. On this occasion, you have sầu to resort khổng lồ a professional tệp tin recovery tool for help. And bdkhtravinch.vn tệp tin recovery software is worth trying. It allows you to recover deleted DOC/DOCX, XLS/XLSX, PPT/PPTX, PDF, CWK, HTML/HTM, INDD, EPS, etc. with a few clicks.

Give it a try khổng lồ get your lost Excel baông chồng immediately:

Step 1. Select location & clichồng "Scan"

Choose the drive X: or a specific thư mục on Desktop or somewhere else where you lost the excel files, & then cliông xã "Scan".

Step 2. Locate your excel files

To quickly find the Excel files from the scan results, cliông xã on the "Filter" on the top area, choose "Excel", and clichồng tree view on the left side. Or, tìm kiếm .xls or .xlsx in the Search box. 

Step 3. PReviews & recover

You can double cliông xã on the Excel file khổng lồ pReview its integrity. Finally, select the desired Excel files & click "Recover".

2. Back-Up Excel File Automatically 

If you need khổng lồ modify and change your worksheet frequently, turning on the AutoSave feature is also necessary. Or you can also copy và backup your tệp tin to another safe location manually in case of accidents.

Final Words

"Excel cannot open the tệp tin "(filename)" .xlsx because the tệp tin format for tệp tin extension is not valid" is a usual error that you can face while opening an Excel file. With the help of the above methods, this error can easily be resolved without data loss.

If Excel cannot open the file problem is due to lớn file corruption, bdkhtravinch.vn file repair tool can help you fix và recover the Excel tệp tin with a few clicks in a short time. It is good at repairing photos, videos, documents, và other files on the hard drive, SD thẻ, memory thẻ, or any other storage medium. No matter they are lost or existed on your devices. It"s worth a shot.

Excel Cannot Open The File Because the Extension Is Not Valid FAQs

The following four frequently asked questions are highly related to Excel cannot open the tệp tin because the tệp tin format or file extension is not valid. If you also have sầu any of these problems, you can find the methods here.

How vì I fix the file format or tệp tin extension is not valid?

You can try to lớn fix Excel cannot open the file because the tệp tin format or tệp tin extension is not valid by changing the tệp tin extension:

Step 1. Open your Excel file. On the taskbar, select "File". Then select "Options" > "Export" > "Change File Type".

Step 2. You can directly change the file extension depending on the version of Excel installed. Click "Save As". Then, check if the error "Excel cannot open the file" is resolved or not.

How vì I recover an Excel tệp tin format or tệp tin extension that is not valid?

You can restore Excel tệp tin format, or the tệp tin extension is not valid from previous versions.

Select the damaged file. Right-cliông chồng it and cliông chồng "Properties" > "Previous Version". A các mục of previous versions will appear; you need to lớn select the option you are interested in và click "Restore" to lớn recover. Previous versions come file File History or from restore points.

What does tệp tin extension not valid mean?

"Excel cannot open the file "(filename)" .xlsx because the tệp tin format for tệp tin extension is not valid" is a comtháng error that many users may encounter while opening a .xlsx tệp tin, especially when opening a spreadsheet received through an gmail. The possible reasons for this issue might be:

The Excel file is corrupt or damaged.The Excel file is not compatible with the version of MS Excel you"re using.

Why can"t I open an XLSX file?

When the Excel tệp tin is corrupted, not compatible with the Excel version, infected by the virut, or received by gmail are the common cause of "Excel cannot open the tệp tin because the tệp tin format or tệp tin extension is not valid" problem. Any of these problems appear, you could not open an XLSX file.