File extension ACF
| File type | Microsoft Agent HTTP Character Format |
| Developer | Valve |
| Ads |
What is a ACF file?
File with an .ACF extension contains data of cache memory of Steam Valve application – information on downloaded software and its updates. Previous Steam versions used for this purpose files with .GCF and .NCF extension.
Steam application is used to download different types of software, mainly games and their updates. It is also a social network platform and it enables multiplayer game mode. It is available for most of modern operating systems and devices.
Program(s) that can open the .ACF file
How to open ACF files
If you cannot open the ACF file on your computer - there may be several reasons. The first and most important reason (the most common) is the lack of a suitable software that supports ACF among those that are installed on your device.
A very simple way to solve this problem is to find and download the appropriate application. The first part of the task has already been done – the software supporting the ACF file can be found in the table. Now just download and install the appropriate application.
Possible problems with the ACF format files
The inability to open and operate the ACF file does not necessarily mean that you do not have an appropriate software installed on your computer. There may be other problems that also block our ability to operate the Microsoft Agent HTTP Character Format file. Below is a list of possible problems.
- Corruption of a ACF file which is being opened
- Incorrect links to the ACF file in registry entries.
- Accidental deletion of the description of the ACF from the Windows registry
- Incomplete installation of an application that supports the ACF format
- The ACF file which is being opened is infected with an undesirable malware.
- The computer does not have enough hardware resources to cope with the opening of the ACF file.
- Drivers of equipment used by the computer to open a ACF file are out of date.
If you are sure that all of these reasons do not exist in your case (or have already been eliminated), the ACF file should operate with your programs without any problem. If the problem with the ACF file has not been solved, it may be due to the fact that in this case there is also another rare problem with the ACF file. In this case, the only you can do is to ask for assistance of a professional staff.
Similar extensions
| .a26 | Atari 2600 ROM Image Format |
| .a52 | Atari 5200 Game Image Format |
| .acf | Microsoft Agent HTTP Character Format |
| .acx | Atari ST Program Format |
| .agb | Nintendo Game Boy Advance ROM Image |
| .age3scn | Age Of Empires III Scenario Format |
| .ain | ArcView Attribute Index Format |
| .alr | ADRIFT Language Resource Format |
How to associate the file with an installed software?
If you want to associate a file with a new program (e.g. my-file.ACF) you have two ways to do it. The first and the easiest one is to right-click on the selected ACF file. From the drop-down menu select "Choose default program", then click "Browse" and find the desired program. The whole operation must be confirmed by clicking OK. The second and more difficult to do is associate the ACF file extension to the corresponding software in the Windows Registry.
Is there one way to open unknown files?
Many files contain only simple text data. It is possible that while opening unknown files (e.g. ACF) with a simple text editor like Windows Notepad will allow us to see some of the data encoded in the file. This method allows you to preview the contents of many files, but probably not in such a structure as a program dedicated to support them.