Opening ACS files

Did your computer fail to open an ACS file? We explain what ACS files are and recommend software that we know can open or convert your ACS files.

What is an ACS file?

Files that contain the .acs file extension are most commonly associated with older versions of the Microsoft Windows operating system. These files contain Agent character files, similar to the Microsoft Bob files that first introduced interactive application characters.

The ACS files are associated with the Windows OS Microsoft Agent feature, which has now been discontinued. These files contain animated characters that were created with the Microsoft Agent tool.

Microsoft Agent was a technology that was developed by Microsoft. The Agent application allowed for animated characters that were compatible with text-to-speech engines and speech recognition software. The software was a pre-installed component of the Microsoft 2000 operating system.

Try a universal file viewer

In addition to the products listed above, I would suggest that you try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and very likely yours too! Download Free File Viewer.

By Prof. Jones (The File Expert)

Chief Content Editor and File Expert

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