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1. Microsoft File Format Mac Compatible Windows 7
2. Microsoft File Format Mac Compatible Software
3. Microsoft File Format Mac Compatible Windows 7
4. File Format Download

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Summary

Did you get an error message of 'Excel cannot open the file **.xlsx because the file format or file extension is not valid' while trying to open a file? Quick fixes and advanced solutions are available here to fix this problem and access your document.

Excel Cannot Open the File/the File Format or File Extinction Is Not Valid

Sometimes, when you try to open or edit an Excel file on Microsoft Office 2003, 2007, 2010, 2013 or 2016, 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 and that the file extension matches the format of the file.'

It usually indicates the file is not compatible with the Excel version or the file has come corrupt or damaged. In this article, we will show you all the possible solutions, and you can try them respectively until fixing the issue.

Quick Fixes for 'Excel Cannot Open the File.xlsx' Error

Two simple methods are provided to fix Excel quickly cannot open the file issue.

1. Change the Excel File Extension

Step 1. Open Microsoft Excel and go the 'File' tab.

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

Step 3. Change the file extension to any other file format that MS Excel supports and click 'Save As'. Then, Check if Excel can open your file or not.

2. Open the Excel File in Safe Mode

Step 1. Press Windows+R key, type: excel.exe /safeand click 'OK'.

Step 2. Save the file as .xlsx. It sometimes helps to access your data if Excel cannot open the file.xlsx because of the file corruption.

Advanced Solutions to 'Excel Cannot Open the File.xlsx'

If the problem still exists after you have tried the above quick fixes, continue using another two advanced solutions to fix this error.

Microsoft File Format Mac Compatible Windows 7

1. Open Excel File Using Open and Repair Feature

Step 1. Start Office Excel.

Step 2. On the File menu or the Microsoft Office button, click 'Open'.

Step 3. In the Open dialog box, click to select the inaccessible Excel file.

Step 4.Click the down arrow on the Open button, and then click 'Open and Repair'. Microsoft Office will then start to check the Excel document and repair problems or corruptions it found.

2. Recover Excel File from the Previous Version or AutoRecover

Restore from the previous versions

This method can only restore lost files to a previous version. It means that you may lose some changes you may have made to the document.

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

Step 2. Open the 'Previous Version' tab to list all the previously stored version of the Excel file.
Step 3. Choose the right version and click 'Restore' to retrieve the document.

Restore from AutoRecover

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

Step 1. Open Office Excel and got to 'File' tab > click 'Info'.

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

Step 3. Open the file in Excel and click 'Restore'.

Step 4. Save the file with another file name and set the extension as .xlsx.

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Worthy Tips to Prevent Excel File from Loss

There are many ways to prevent data loss. If you have lost important Excel file due to careless deletion, hard drive formatting, or virus attack, you can use the data recovery tool to retrieve lost data. There is another crucial point to avoid data loss, that 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 to recover lost excel spreadsheets caused by accidental deletion, OS crash, hard drive damaged/corrupted or lost partition. On this occasion, you have to resort to a professional file recovery tool for help. And EaseUS file recovery software is worth to try. 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 to get your lost Excel back immediately:

Step 1. Specify a location.

Run EaseUS Data Recovery Software. Choose the drive X: or perhaps a specific folder on Desktop or somewhere else where you lost the excel files, and then click 'Scan'.

Microsoft File Format Mac Compatible Software

Step 2. Scan for data.

Microsoft File Format Mac Compatible Windows 7

During the scan, you'll see more and more data showing up very quickly in the 'Deleted files' result. That's part of what the software has found and displayed. To quickly find the Excel files in the massive data in the scan results, click on the 'Filter' on the top area and choose 'Documents'. Or, search .xls or .xlsx in the Search box.

File Format Download

Step 3. Preview and recover.

You can double click on a file to preview its integrity. Finally, select the desired files and click 'Recover'.

2. Back up Excel File Automatically

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