File Extension ASPX

  • Full name
    Active Server Page Extended ASP.NET Script Format
  • Developer
  • Popularity
Have you encountered a problem with a ASPX file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a ASPX file here. In the further part of this page we have added a list of programs that should open your ASPX file. It is enough you choose a proper application for your operating system, download and install it.


The extension ASPX stands for Active Server Pages Extended (ASP.NET) and represents the successor to the Internet technology ASP. This technology developed by Microsoft Corporation is used for the server-side creation of dynamic web pages and has little in common with the old ASP version ,

Files with the extension ASPX are standard HTML documents in which one or more scripts are embedded. These scripts can be written in VBScript or JScript, the JavaScript alternative from Microsoft. In addition, programs in VB.Net or C #, which are source code files on the server, can be used via the ASPX page.

Since ASPX files are typically executed on a web server, any browser can be used to display the resulting document. Aspx files are similar to PHP or CGI. The users never get to see the actual ASPX file, but only the created HTML page.

ASPX files are just text files that can be processed on an ASP.NET server. They can be opened and edited in any text editor, however it is recommended to use editors with developer functions such as syntax highlighting for easier work.

The extension ASPX is mostly used instead of htm or html on websites, if the server is running under Microsoft IIS and uses ASP.NET. On Linux there is a possibility with mono to develop and host ASP.NET pages on a Linux system (with restrictions).

Programs which can open a ASPX file

How to open a ASPX file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the ASPX file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a ASPX file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support ASPX files. At this point we are looking for disk space where the application was installed in and we can link it with a ASPX file. Since then, our operating system will use the selected program to support all ASPX files.

Other issues

Despite the described problem with ASPX there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the ASPX file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the ASPX file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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