.ACF File Extension

File Type:
Steam Application Cache File

Having trouble opening .acf extension? Don't panic! This page explains what acf files are as well as suggests programs you may use to open acf files. You can download these programs through this page.

What is an ACF file?

Acf file extension has Steam Application Cache file type, developed by Valve, which is associated with the "game files" category.

Typically used by Valve Steam, the file stores data, concerning the downloaded software. It may be also used for updating games. ACF files are usually employed by latest versions of the Steam content delivery system. Speaking of some older versions, they support .NCF and .GCF file formats.

To learn how you can open the given file, read the information below.

acf file icon
File Type:
Steam Application Cache File
Game Files

How to open ACF file?

Double click the acf file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .acf extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the acf extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the acf file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open ACF files

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the acf file as well. Download Universal File Viewer for your OS.

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