Do you get an error message: Excel cannot open the file **.xlsx because the tệp tin format or file extension is not valid? Quiông chồng fixes and advanced solutions are offered here lớn help you fix this error on Microsoft Office 2007, 2010, 2013, or 2016. Besides, if you lost Excel files, you can tải về goldmarkcity-hanoi.com data recovery software lớn get additional help.

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3 Fixes for Excel Cannot xuất hiện 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 file, it is opened with the same extension. However, some users may encounter an error when trying lớn open or edit an Excel tệp tin in Office 2003, 2007, 2010, 2013, 2016, 2019, và 365. The error message displays, "Excel cannot open the tệp tin because the extension is not valid".

This article will provide you with three effective sầu solutions khổng lồ resolve excel cannot open the file because the tệp tin format or tệp tin 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 lớn repair Excel files. 

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

Error "Excel Cannot mở cửa the File Because The File Format or File Extinction Is Not Valid"

Sometimes, when you try to open or edit an Excel tệp tin on Microsoft Office 2003, 2007, 2010, 2013, 2016, 2019, or 365 you may encounter the following problem:

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


It usually indicates the tệp tin is not compatible with the Excel version of the file 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 cộ /safe, and 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, check for any add-ins that are causing problems in Excel. Disable the add-ins và clichồng on the "OK" button. Then, restart Excel to lớn check if the problem is fixed. If not, move sầu on to lớn the fixes below.


There are three useful solutions in total lớn solve sầu the Excel cannot open file issue. Besides, two methods are provided to lớn recover Excel when the tệp tin 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 khổng lồ the incompatible tệp tin extension of the Excel tệp tin. 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 và later versions like Excel 2010, Excel 2013, Excel năm 2016, & 2019 save sầu files in XLSX file format. You can change the mặc định file format for the corresponding Excel version to any other file format supported by MS Excel.

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

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

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


Fix 2. Open Excel File Using the xuất hiện và Repair Feature

The "xuất hiện & 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 tệp tin 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, cliông xã khổng lồ select the inaccessible Excel tệp tin.

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


Fix 3. Use goldmarkcity-hanoi.com File Repair Tool to 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 tệp tin corruption rather than file compatibility, you need a professional tệp tin repair program khổng lồ help you fix the problem. 

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

Why You Choose goldmarkcity-hanoi.com Data Recovery Tool

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

Now, download the goldmarkcity-hanoi.com MS Office document repair tool và follow the step-by-step guides below khổng lồ repair damaged Excel files with three steps.

Step 1. Select a location khổng lồ start finding corrupted Excel files

Launch goldmarkcity-hanoi.com Data Recovery Wizard, và then scan the corrupted or damaged Excel files.


Step 2. Scan for the corrupted Excel document

Find the damaged files through the filter, tệp tin path, search, etc.

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Step 3. Repair & save sầu the Excel file to lớn a secure location

Double-cliông xã the corrupt excel file, và this program will automatically repair corrupted và damaged Excel files. Cliông chồng "Recover" lớn save the repaired Excel files to a safe location.


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 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 chiến bại some changes you may have made khổng lồ the document.

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


Step 2. Open the "Previous Version" tab to lớn danh sách all the previously stored versions of the Excel tệp tin.

Step 3. Choose the right version and cliông xã "Restore" lớn retrieve sầu the document.


2. Restore Unsaved Excel File Using AutoRecover

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

Step 1. mở cửa Office Excel and go khổng lồ the "File" tab > click "Info".

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


Step 3. xuất hiện the tệp tin in Excel & clichồng "Restore". 


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

Worthy Tips khổng lồ Prsự kiện Excel File from Loss

There are many ways khổng lồ prevent data loss. If you have sầu lost important Excel files due to lớn careless deletion, hard drive sầu formatting, or virut attachồng, you can use the data recovery tool to retrieve sầu lost data. There is another crucial point to avoid data loss, which is backing up your Excel file 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 khổng lồ 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 file recovery tool for help. And goldmarkcity-hanoi.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 sầu it a try to get your lost Excel back immediately:

Step 1. Select location and click "Scan"

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


Step 2. Locate your excel files

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


Step 3. Previews and recover

You can double clichồng on the Excel tệp tin lớn pĐánh Giá its integrity. Finally, select the desired Excel files & cliông chồng "Recover".


2. Back-Up Excel File Automatically 

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


Final Words

"Excel cannot open the file "(filename)" .xlsx because the file 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 sầu methods, this error can easily be resolved without data loss.

If Excel cannot open the file problem is due lớn file corruption, goldmarkcity-hanoi.com tệp tin 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 card, memory card, or any other storage medium. No matter they are lost or existed on your devices. It"s worth a shot.

Excel Cannot mở cửa The File Because the Extension Is Not Valid FAQs

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

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

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

Step 1. mở cửa your Excel tệp tin. On the taskbar, select "File". Then select "Options" > "Export" > "Change File Type".

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

How vị I recover an Excel file 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-click it and clichồng "Properties" > "Previous Version". A danh sách of previous versions will appear; you need to select the option you are interested in and clichồng "Restore" khổng lồ recover. Previous versions come file File History or from restore points.

What does tệp tin extension not valid mean?

"Excel cannot open the tệp tin "(filename)" .xlsx because the file 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 email. The possible reasons for this issue might be:

The Excel file 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 virut, or received by email are the comtháng cause of "Excel cannot open the tệp tin because the file format or tệp tin extension is not valid" problem. Any of these problems appear, you could not open an XLSX tệp tin.