If you are seeking information about file extensions, then you are in the right place at the right time.

Details of extension .actproj

On this page, we're going to take a closer look at the .actproj file extension, which is related to Visual Studio .NET ACT Project.

We'll explain what exactly a .actproj file format is and how you can use it. If you're interested in learning more details about this type of file, we'll show you where to find them. And if you ever need to convert .actproj files into different formats, we'll give you some tips on how to do that too.

Let's see the file format associated with this file extension!


  1. Visual Studio .NET ACT Project

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Visual Studio .NET ACT Project

actproj file - Visual Studio .NET ACT Project
The ACTPROJ file belongs to the Project category and works with Microsoft Visual Studio, being used as a Visual Studio .NET ACT Project. The developer is still actively supporting the Microsoft Visual Studio, likely. Our data shows that Microsoft Visual Studio uses 309 more file types.
Program name: -
Category: Project files
Mime-type: application/octet-stream
Related extensions:
.vspf Visual Studio Performance Filter
.hhl Visual Basic Data
.inh Visual Basic Basfwin Data
.pdl Policy Description Language File

The .actproj file extension might not only belong to a single type of file, there could be various kinds that use it. Keep in mind that files with the .actproj extension may contain various content types. If you have helpful information about this extension, write to us!

Having trouble opening a .actproj file?

If you want to open a .actproj file on your computer, you just need to have the appropriate program installed. Incorrect settings for the .actproj association can trigger this error.

Windows can't open this file:

File: example.actproj

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program with which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2016/2019/2022, Windows 7, Windows 8, Windows 10, Windows 11, Linux, Mac OS X, macOS, iOS, Android