Meet the problem Excel cannot initiate the file?
Cant launch the Excel file because the extension is not valid?
Excel cannot kick off the file because it is corrupted?

and recover unsaved Excel files.
This post also offers guides to help you recover deleted, lost Excel files.
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Way 1.
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Check the step-by-step guide below.
Step 1.
Step 2.

Change Workbook File Format
Next you could clickFiletab in the toolbar and selectExportoption in the left column.
Then clickChange File throw in, and snag the .xlsx extension option underWorkbook File Types.
ClickSave Asto save the changes.
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Way 2.
The simplest way is to use/safeoption.
Step 1.you’re free to pressWindows logoandRkeys on the keyboard to openRundialog.

Step 2.Then you might jot down the following command:excel /safe, and pressEnterorOK.
This post teaches you how to activate Microsoft Office 365/2021/2019/2016/2013 on Windows 11/10.
Learn how to activate Microsoft Office with product key or KMS.

Way 3.
Microsoft Excel has a built-in file repair feature Open and Repair to help yourepair corrupt Excel files.
Step 1.you could open Microsoft Excel app, and clickFilemenu in the toolbar.
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Step 2.Next you’re able to clickOpenfrom the left column.
Step 3.hey dont fire up the chosen worksheet directly.
you should probably hit the drop-down arrow next toOpenbutton and chooseOpen and Repairoption.
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In this way, you could repair andrecover corrupted files.
This Microsoft Office update guide teaches you how to update Office 365/2021/2019/2016/2013, etc.
Check how to download and install Office updates in 4 ways.

Way 4.
How to recover lost/deleted Excel sheets?
It is a 100% clean and safe data recovery tool.
Step 1.
Run MiniTool Power Data Recovery
Double-click MiniTool Power Data Recovery to open thisfree file undelete software.
Choose a main machine category from the left panel in the main UI.
you might clickThis PCto get ready to recover deleted/lost files from your rig hard drive.
; click CD/DVD Drive to recover data from DVD disc.
To recover data from these devices, you’re gonna wanna connect them with computer beforehand.
Step 2.
The scanning time depends on the drive size and computer performance.
Step 3.
Way 5.
How to Recover Unsaved Excel Sheet
Excel cannot launch the file is a common issue for users.
#1.
Recover Unsaved Excel Files through Excel
#2.
If it shuts down unexpectedly, you have a chance to recover the unsaved content.
#3.
#4.
Recover Unsaved Excel File from AutoRecover
Another method to recover unsaved worksheet is to use AutoRecover/AutoSave feature.
And this method works if you have enabled the AutoRecover feature in Excel.
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This post teaches you how to activate Microsoft Word 365/2019/2016, etc.
to enjoy the full features of Word app.
4 ways with detailed instructions are provided.
With AutoRecover feature enabled, you could easily recover unsaved files and restore previous versions.
The AutoRecover feature works only if youve saved the file at least once.
The AutoSave/AutoRecover feature is enabled by default.
How to turn on Excel AutoRecover
This post teaches you how to activate Microsoft Excel app.
4 ways are provided with detailed explanations.
Fix Excel Found Unreadable Content Error in filename.xlsx
Excel found unreadable content in filename.xlsx.
Do you want to recover the contents of this workbook?
If you trust the source of this workbook, click Yes.
Conclusion
Here are the all-around fixes for Excel cannot kick off the file error.
Have problems when using MiniTool Software, yo contact[email protected].