What is AESTSr64.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the AESTSr64.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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AESTSr64.exe file information

Windows Task Manager with AESTSr64
AESTSr64.exe process in Windows Task Manager

The process known as Andrea filters APO access service (version (64-bit)) belongs to software APO Access Service (version (64-bit)) by Andrea Electronics (

Description: AESTSr64.exe is not essential for the Windows OS and causes relatively few problems. The file AESTSr64.exe is located in a subfolder of C:\Windows\System32 or sometimes in a subfolder of "C:\Program Files". Known file sizes on Windows 8/7/XP are 89,600 bytes (96% of all occurrences), 86,016 bytes or 88,576 bytes. 
The program is not visible. It is a Microsoft signed file. The AESTSr64.exe file is not a Windows core file. Therefore the technical security rating is 16% dangerous, however you should also read the user reviews.

Recommended: Identify AESTSr64.exe related errors

Important: Some malware camouflages itself as AESTSr64.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the AESTSr64.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

AESTSr64.exe is part of APO Access Service (64-bit) developed by Andrea Electronics Corporation.
Apparently it is a microphone noise filltering process, in other words it does some (probably fourier) transformation on sound input to remove background noise. The name alarmed me as well (what the h*** is Andrea doing with my PC, I didn't invite her). But apparently harmless and needed
  SLF   (further information)
It's probably useful in certain ways as described by one of the users here however it conflicts with the standard sound output. The reason being is that it may trigger the PC speakers output at random and all haphazardly probably due to detecting a specific frequency range. The program will then attempt to filter that noise or something such as that whilst using headset/earphones which should be activated all the time instead of having this conflict. Because sometimes the sound of the PC speakers can disturb people nearby even though when using earphones for example, so strange bug it is.
  KimKat   (further information)

Summary: Average user rating of AESTSr64.exe: based on 4 votes with 3 user comments. One user thinks AESTSr64.exe is essential for Windows or an installed application. 2 users think it's probably harmless. One user thinks it's neither essential nor dangerous.

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Best practices for resolving AESTSr64 issues

A clean and tidy computer is the key requirement for avoiding problems with AESTSr64. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off doing a repair of your installation, or in the case of Windows 8, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the AESTSr64.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

AESTSr64.exe [all]