What Is an .Aspx File and How to Open It in Windows 10?

Computers, smartphones, and other new devices make excellent storage spaces. They are capable of storing loads of files and data, which may vary in format and usage.

For instance, they can save dozens of .docx files, which are intended for creating documents. They can also support read-only documents like .pdf files.

Now, while some of these files can be accessed easily, you should know that others need to be converted into another readable format. One of these file formats is the .aspx.

What Is an .Aspx File?

ASPX, short for Active Server Pages, is a legitimate file format that was first introduced by Microsoft. A file with this file extension is designed to run on Microsoft’s ASP.NET framework.

Most websites, particularly Microsoft’s, have the ASPX file extension instead of the common ones like .php and .html. This file is generated by web servers that contain source codes and scripts, essential for communicating with a web browser. It also contains instructions on how a web page should be opened and displayed.

How to Open .Aspx File on Windows 10

Most operating systems, particularly Windows, are not designed to open the .aspx file format right away. However, this does not mean you can’t do anything about it. There are actually many ways to do it. And below, we’ll share some proven and tested methods on how to open downloaded .aspx files.

Check them out:

Method #1: Change the file extension

There are instances when you downloaded an .aspx file format unintentionally because your browser failed to convert the file extension. This notoriously happens to files in .docx, .pdf, or .xlsx format.

To resolve this, all you have to do is figure out the correct file extension. And then, change it. Here’s a detailed guide on what to do:

  1. Launch the Run dialog box by pressing the Windows + R keys.
  2. Into the text field, input control folders. Hit Enter.
  3. Navigate to the View tab and untick the option next to Hide extensions for known file types.
  4. Click OK to save the changes and close the dialog box. At this point, you should be seeing the correct file format.
  5. Next, right-click on the .aspx file and choose Rename.
  6. Change the file extension from .aspx to the correct one.
  7. Click Yes when prompted with a warning.

Method #2: Use a third-party program or a browser

If the first method doesn’t work, then we suggest using third-party programs that can open .aspx files. These programs include Microsoft Visual Studio, Adobe Dreamweaver, and Notepad++.

However, if you don’t fancy the idea of downloading and installing another program just to open one .aspx file, then consider using your favorite browser. As long as it’s updated, then it should work just fine.

This method works for Mozilla Firefox, Microsoft Edge, Google Chrome, and other browsers. Here’s is a step by step guide for you:

  1. Right-click on the .aspx file.
  2. Select Open with.
  3. Choose Chrome or any other browser.
  4. If you cannot find your preferred browser, select Choose another app and locate your desired browser from the list.
  5. After choosing a browser, the file should automatically open on your browser. 

Handy Tip: If you wish to have a readable copy of the .aspx file on your PC while using your browser, press the CTRL + P keys, choose Save as PDF, and click Save.

Method #3: Convert it using online tools

Another quick and easy method to access .aspx files is to use online converter tools. Convert the .aspx files to .pdf, .html, or other file formats so you can easily open them. However, it is worth noting that .aspx files have specific purposes. So, it’s not always recommended to convert them.

When an .aspx file is converted to HTML, you can access the HTML file as if it’s a .aspx web page. But the unique elements of ASPX will already be altered.

Important Reminders: Think Before You Click

While .aspx files are legitimate files, there are instances when malware developers take advantage of the file format and use it to disguise threats. So, before you even think about double-clicking or converting .aspx files, make sure you are not dealing with malware entities.

To do this, run a quick malware scan on your system. You may use the built-in malware scanner on your device, which is Windows Defender, or install one from a trusted source. Whichever option you choose, what matters most is that you are certain that the file is not a malware entity.

In case the malware scanner flags the file as a threat, put it to quarantine. Better yet, have it fixed right away.

Wrapping Up

By following the methods above, you can easily open .aspx files. You have the option to rename them, convert them online, or use third-party tools like Microsoft Visual Studio, Notepad++, or Adobe Dreamweaver. But if you are still having a hard time opening them, do not hesitate to drop your queries in the comment’s section.

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