ACS.exe File Information – What is it

  • Amar 
  • OS

Worry about acs.exe, its uses, and whether it’s a virus or safe? Well, this ACS stands for Atheros Configuration Service. The name of its process is Atheros Wireless LAN. It’s not the core installation file of Windows OS. Let’s discuss what this is and why it is on your system.

ACS.exe file information

What is ACS.exe?

ACS.exe is nothing but a process that has configuration options for Atheros Wireless LAN. So, when you install Atheros, the .exe file also gets installed onto your computer.

It does not have any visible purpose but that doesn’t mean you remove it completely. Unless you find that it is giving you problems, we recommend that you leave it alone. However, if you are not using Atheros Wireless LAN anymore, you can permanently uninstall the software. When you do so, ACS.exe will also be uninstalled.

What are the features of ACS.exe?

  1. It is present in the hard drive of your system. Its location is C:\Windows\System32.
  2. The size of this file varies but 36,864 bytes and 499,796 bytes are the common sizes.
  3. When you open this extendable file, you will see a machine code. The commands get executed when you start Atheros in your system.
  4. It runs as a task or an Atheros Wireless LAN process.
  5. It has the ability to hide.
  6. It is not a core file for Windows.
  7. It is not a CPU-intensive process but having said that, you should remember not to run too many processes at the same time. To avoid the process from starting when you turn the computer on, you should manually disable it.
  8. Sometimes, ACS.exe can give you errors. In this case, we would advise that you stop the process and update it. If the problems still continue, you may get rid of it or try solutions that are mentioned in the latter part of this article.

Is ACS.exe harmful?

No, ACS.exe is not harmful. The only thing you should remember is its location. If your system is installed in C drive, the default installation location would be in the C:\Windows\System32 directory. If you find it anywhere else, it is probably a trojan or malware, and this particular file, you should remove it.

Common Errors

Yes, even though the process is not harmful, errors may arise. Mostly, they occur during startup (computer or program) or during a particular task or function. Following are the most common errors related to ACS.exe, which are as follows:

  • Application not valid
  • Cannot find ACS.exe
  • ACS.exe failed to load
  • ACS.exe is not running

Sometimes user complained that ACS.exe consume high CPU at the back end.

The reasons behind these problems could be malware, invalid registry, missing files, or corrupt files. Let’s take a look at a few solutions that you could try out:

  1. Update all your drivers
  2. Conduct a complete malware scan
  3. Update your Windows
  4. Clean your disk and remove all the junk files and folders
  5. Repair registry entries


Unless the ACS.exe process starts causing problems, you can ignore it because it not a virus. If you facing any similar issue related to this executable file then do leave your feedback in the below section.


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