How to Fix Windows Can’t Open this File

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Have you ever faced this issue while trying to open any file i.e. “Windows can’t open this file”.

You might be thinking that whether you are using old version of windows or you need to update windows.

But this problem is not related to your windows. This problem is related to the file type.

Every file has an extension, this extension may be txt or docx. Depending on the file extension the program installed on your computer open that file.

For example a file with extension txt opened with notepad and a file with docx extension opened with Microsoft Word.

What is Filename Extension

A file extension is an ending of file after dot which helps us identifying type of file. So it is suffix at the end after the period which is usually two to four characters long.

Operating system installed on computer use these extensions to identify which apps or program required to open that file.

For example if you have installed Microsoft Office in Windows operating system. Then you can open a file with extension docx(2007/10) or doc(2003) using Microsoft word.

But you have not installed microsoft office then you may see this “Windows can’t open this file” error.

Actually there are thousands of file extensions associated with one or more applications. But we do not need to remember all and their associated apps.

Some of them are very common and listed below.

File TypeExtensions
Audio Filesaif, cda, mid, midi, mp3, wav, mpa, ogg, wma, wpl
Compressed Files7z, arj, tar.gz, z, zip
Image Filesai, bmp, gif, jpeg, png, svg
Microsoft Office Filesdoc, docx, xls, xlsx, ppt, pptx
Font Filesfnt, ttf, otf, fon

Also Read: 9 Best Free Duplicate File Finder

How to Check file Extension

For security reasons in latest window versions file extension types are hidden by default. But you can check and change file extension type.

To check file extension type in Windows 10:

Open My Computer > Go to View at Top Bar.

Check File name extensions checkbox.

Check file name extension checkbox

And file extensions will become visible.

How to Open File

Now if your file is not opening just check the extension of the file. If you file extension is one of those listed above then you have to check whether you have compatible app or program installed.

If you do not find file extension from the table then you have to search on google with the extension name to find compatible program.

Sometime you may fall into a situation where you could not find any compatible program. These files may be some form of binary code that a human can’t understand.

These files may be windows file like dll file. So you can’t open these files or can’t understand if you try to open with any incompatible program.

So if you are trying to open a file and facing windows cannot open this file type of error. Then after checking file extension you have to install compatible program.

In some cases even after installation you may have to select the program from this list. For this you have to click on More Apps and select program from the list.

You may also fall in the situation where any other program may be used to open the file.

File extension may be changed

In this case you have to worry more. Because even after compatible program your file may not be opened.

So either your file is corrupted or your file extension may be changed due to ransomware. To avoid this situation your computer must have anti virus installed.

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