ASMX File Description

Reporter:   |   Last Updated: December 05, 2018

Microsoft Silver

ASMX File Summary

The ASMX File Extension has one primary file type, ASP.NET Web Service File format, and can be opened with two distinctive software programs, with the dominant related application developed by Microsoft Corporation (Microsoft Visual Studio software). Generally, these files are considered Web Files.

ASMX files are found on both mobile and desktop platforms and can be opened using Windows and Mac operating systems. The ASMX File Extension carries a Popularity Rating of "Low", meaning that these files are scarcely found in most user's file stores.

Please see the detailed information below to learn more about ASMX files and the programs that can open them. In addition, we provide simple troubleshooting information to help you open your ASMX file.

Low
Universality
5160
Position

/ 11690

Active

Mode

5

December

2018

Updated

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Kinds of ASMX Files


Primary ASMX File Association

.ASMX
Formatting:.asmx
Classification:ASP.NET Web Service File

ASMX file contains the WebService directive, which identifies the public class that implements the Web service logic. ASMX files can be accessed over the Internet or from a local network.

Programmer: Microsoft Corporation
Group:Web Files
Key: HKEY_CLASSES_ROOT\.asmx

Software Programs That Open The ASP.NET Web Service File:


Microsoft Visual Studio by Microsoft Corporation

Windows

ASP.NET by Microsoft Corporation

Windows
Mac

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ASMX Popularity


Top Browsers

Chrome (58.80%)
Firefox (11.05%)
Internet Explorer (9.04%)
Edge (8.46%)
Safari (3.87%)


Sources of ASMX Problems


Common ASMX Opening Problems

Microsoft Visual Studio is Not Installed

You encounter an error message such as "%%os%% Can't Open ASMX Files" when trying to open your ASMX. If so, it typically means that you don't have Microsoft Visual Studio installed for %%os%%. The typical path of opening your ASMX with a double-click won't work because %%os%% cannot make the program connection.


Tip: If you have another software that you know opens ASMX files, you can select it by hitting the "Show Apps" button.


Microsoft Visual Studio is Out-of-Date

It is possible that your version of Microsoft Visual Studio isn't able to open your ASP.NET Web Service File file due to incompatibility. Visit the Microsoft Corporation website to download (or purchase) the latest version of Microsoft Visual Studio. Most of the time your ASP.NET Web Service File file was created by a newer Microsoft Visual Studio than what you have installed.


Tip: If you right-click on your ASMX file, then select "Properties" (Windows) or "Get Info" (Mac), you can obtain hints about what version you need.


Regardless, most of the ASMX file opening problems relate to not having the right version of Microsoft Visual Studio installed.


More Causes of Problems Opening ASMXs

Assuming you have the right Microsoft Visual Studio version installed, other problems can prevent you from opening ASMX files. There can be other issues - unrelated to software - preventing you from opening ASMX files. Problems unrelated to software:

  • ASMX file type Registry entries are wrong
  • Deletion of the ASMX file description from the Registry by mistake
  • Defective install of a ASMX program, such as Microsoft Visual Studio
  • Your ASMX file is corrupted (issues with your ASP.NET Web Service File file itself)
  • Your ASMX is infected with malware
  • Device drivers of the hardware associated with your ASMX file are corrupt or out-of-date
  • Too many applications are open on your PC to load your ASP.NET Web Service File file successfully

Quiz: Which of the following is not a MIME type?









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