Do you get an error message that says “Excel cannot open the tệp tin **.xlsx because the tệp tin format or tệp tin extension is not valid”? Quiông xã fixes and advanced solutions are offered here lớn help you fix this error in Microsoft Office 2007, 2010, 2013, or năm nhâm thìn. Besides, if you lost Excel files, you can tải về suviec.com data recovery software khổng lồ recover your files.

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3 Fixes for "Excel Cannot xuất hiện the File Because the Extension Is Not Valid"

The file 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 khổng lồ open or edit an Excel file in Office 2003, 2007, 2010, 2013, năm 2016, 2019, and 365. The error message displayed reads "Excel cannot open the file because the extension is not valid".

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


Workable SolutionsStep-by-step Troubleshooting
Fix 1. suviec.com File Repair ToolLaunch suviec.com Data Recovery Wizard, and then scan the corrupted or damaged Excel files...Full steps
Fix 2. Change File ExtensionOpen Microsoft Excel và go to lớn "File" > clichồng Export & choose Change File Type...Full steps
Fix 3. Use Open and RepairStart Office Excel > click File và xuất hiện > select the inaccessible Excel file...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 tệp tin in Microsoft Office 2003, 2007, 2010, 2013, năm 2016, 2019, or 365, you may encounter the following problem:

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

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It usually indicates the file 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, và you can try these until your issue is fixed. Before you follow the solutions, kiểm tra if Excel is working normally.

Step 1. Press Windows+R keys, type excel.exe cộ /safe, & clichồng "OK". Loading Excel without templates and add-ins allows you khổng lồ 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 and click on the "OK" button. Then, restart Excel to lớn kiểm tra if the problem is fixed. If not, move sầu on to lớn the fixes below.

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

Fix 1. Use suviec.com File Repair Tool to Fix Excel Cannot mở cửa the File

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

suviec.com Data Recovery Wizard is an all-in-one tool that can help recover deleted files & repair corrupt files easily and efficiently.


suviec.com Excel Data Recovery/Repair Tool

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Go ahead and tải về the suviec.com MS Office document repair tool, then follow the step-by-step guides below khổng lồ repair damaged Excel files in three steps:

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

Launch suviec.com Data Recovery Wizard, & then scan the corrupted or damaged Excel files.

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Step 2. Scan for the corrupted Excel document

Find the damaged files through the filter, file path, search, etc.

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Step 3. Repair & save the Excel tệp tin khổng lồ a secure location

Double-cliông xã the corrupt excel tệp tin, & this program will automatically repair corrupted & damaged Excel files. Clichồng "Recover" lớn save the repaired Excel files lớn a safe location.

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Fix 2. Change the Excel File Extension to 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 mặc định. Excel 2003 và earlier versions save files as XLS, whereas Excel 2007 & later versions like Excel 2010, Excel 2013, Excel năm nhâm thìn, & 2019 save sầu files in XLSX tệp tin format. You can change the mặc định file format for the corresponding Excel version khổng lồ any other tệp tin format supported by MS Excel.

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

Step 2. Cliông chồng "Export" và choose "Change File Type".

Step 3. Change the tệp tin extension to lớn any other file format that MS Excel supports and cliông chồng "Save As". Then, Chechồng whether Excel can open your file or not.

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Fix 3. mở cửa Excel File Using the Open and Repair Feature

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

Step 1. Start Office Excel. On the File thực đơn or the Microsoft Office button, cliông chồng "Open".

Step 2. In the Open dialog box, clichồng khổng lồ select the inaccessible Excel tệp tin.

Step 3. Click the down arrow on the xuất hiện button, & then click "xuất hiện & Repair". Microsoft Office will then start khổng lồ kiểm tra the Excel document and repair problems or corruption it found. 

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

If your unsaved Excel file cannot be opened because the file format or file extension is not valid, how would you recover unsaved Excel files? In this case, try the two ways below. 

1. Restore Unsaved Excel Wordbook from Previous Versions

This method only restores lost files to a previous version. It means that you might thất bại some changes you may have sầu made to the document.

Step 1. Right-cliông chồng the inaccessible Excel file & choose "Properties".

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Step 2. xuất hiện the "Previous Version" tab lớn list all the previously stored versions of the Excel tệp tin.

Step 3. Choose the most recent version và cliông xã "Restore" lớn retrieve the spreadsheet.

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2. Restore Unsaved Excel File Using AutoRecover

This method only works if you have sầu turned on the AutoSave feature in Microsoft Excel. This feature is also helpful for recovering unsaved Word documents. 

Step 1. mở cửa Office Excel & head into the "File" tab > click "Info".

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

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Step 3. mở cửa the tệp tin in Excel và click "Restore". 

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Step 4. Save the file with a new tệp tin name and mix the extension as .xlsx.

Important Tips to lớn Prsự kiện Excel File from Getting Loss

There are many ways khổng lồ prevent data loss. If you have sầu lost important Excel files due to lớn accidental deletion, hard drive formatting, or virus attacks, you can use the data recovery tool khổng lồ retrieve lost data. Another crucial point to avoid data loss is backing up your Excel tệp tin on a regular basis.

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

In addition to restoring unsaved Excel caused by Excel crashes when saving or other reasons, many users may want lớn recover lost excel spreadsheets caused by accidental deletion, OS crash, hard drive damaged/corrupted, or lost partition. In these cases, you have lớn resort khổng lồ a professional tệp tin recovery tool for help. And, suviec.com 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 lớn get your lost Excel baông chồng immediately:


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Step 1. Select location & click "Scan"

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


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Step 2. Locate your excel files

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


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Step 3. Preview và recover

You can double clichồng on the Excel tệp tin to pnhận xét its integrity. Finally, select the desired Excel files & click "Recover".


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2. Back-Up Excel File Automatically 

If you modify and change your worksheet frequently, turning on the AutoSave sầu feature is a good idea. Or, you can manually copy and backup your tệp tin khổng lồ another safe location in case of accidents.

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Final Words

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

If Excel cannot open the tệp tin problem is due to file corruption, suviec.com tệp tin repair tool can help you fix & recover the Excel file with a few clicks pretty quickly. It is good at repairing photos, videos, documents, & other files on the hard drive sầu, SD thẻ, memory card, or any other storage medium. No matter whether they are lost or exist on your devices. It"s worth a shot.


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"Excel Cannot xuất hiện The File Because the Extension Is Not Valid" FAQs

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

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

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

Step 1. xuất hiện your Excel file. On the taskbar, select "File" và then choose "Options" > "Export" > "Change File Type".

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

How bởi I recover an Excel file format or file extension that is not valid?

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

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

What does file 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 file, especially when opening a spreadsheet received through an gmail. The possible reasons for this issue might be:

The Excel tệp tin is corrupt or damaged.The Excel tệp tin 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 vi khuẩn, or received by gmail, these are the comtháng causes of the "Excel cannot open the file because the file format or tệp tin extension is not valid" problem. If any of these problems appear, you can"t open your XLSX file.