Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

6.3.9600.16384 (winblue_rtm.130821-1623) 5.35%
6.3.9600.16384 (winblue_rtm.130821-1623) 0.09%
6.3.9431.0 (winmain_bluemp.130615-1214) 0.28%
6.3.9431.0 (winmain_bluemp.130615-1214) 0.03%
6.2.9200.16384 (win8_rtm.120725-1247) 2.65%
6.2.9200.16384 (win8_rtm.120725-1247) 16.89%
6.2.8400.0 (winmain_win8rc.120518-1423) 0.09%
6.2.8400.0 (winmain_win8rc.120518-1423) 0.09%
6.2.8250.0 (winmain_win8beta.120217-1520) 0.03%
6.2.8102.0 (winmain_win8m3.110823-1455) 0.09%
6.1.7600.16385 (win7_rtm.090713-1255) 48.15%
6.1.7600.16385 (win7_rtm.090713-1255) 25.35%
6.1.7600.16385 (win7_rtm.090713-1255) 0.89%



Autochk Proxy DLL by Microsoft

Remove acproxy.dll
Version:   6.1.7600.16385 (win7_rtm.090713-1255)
MD5:   aeafe966fb0bef2f9153b7076bc79127
SHA1:   9c02a150d2a4955e28ddc0f29ff1319bff82536c
SHA256:   300e75838034111928c5062c130dcb245c450b459607afda506714d9c5e84b6c
This is a Windows system installed file with Windows File Protection (WFP) enabled.


acproxy.dll executes as a process with the local user's privileges. It is an auto-starting process that used the Windows Task Scheduler service to load when the user logs into Windows (sometimes this is required to bypass the UAC protection). This is typically installed with the program Dolby Home Theater v4 published by Dolby Laboratories Inc. The assembly utilizes the .NET run-time framework (which is required to be installed on the PC). This version is designed to run on Windows 7.


File name:acproxy.dll
Publisher:Microsoft Corporation
Product name:Autochk Proxy DLL
Description:Microsoft® Windows® Operating System
Typical file path:C:\Windows\System32\acproxy.dll
Original name:acproxy.DLL.MUI
File version:6.1.7600.16385 (win7_rtm.090713-1255)
Product version:6.1.7600.16385
Size:11 KB (11,264 bytes)
Digital DNA
File packed:No
Code language:Microsoft Visual C# / Basic .NET
More details


The following program will install this file
Dolby Laboratories Inc
6% remove
Dolby® Home Theater® v4 comprises a suite of technologies that work together to deliver a cinematic surround sound experience on your desktop or laptop with crisp and clear PC audio. You can enjoy it on any set of headphones, over the built-in or external speakers, or through a home theater system. Dolby Home Theater v4 fixes all the problems typically associated with PC audio—tinny sound, weak volume, and buzzing and rattling. Experien...


Scheduled tasks
  • The job 'Proxy' runs on boot in the path '\Microsoft\Windows\Autochk\Proxy'
  • Entry path '\Microsoft\Windows\Autochk\Proxy'
Scheduled tasks startups
Set to load on user login (bypasses Windows UAC if enabled)
  • Login entry path '\Microsoft\Windows\Autochk\Proxy'

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Home Premium 31.00%
Windows 8.1 16.00%
Windows 7 Ultimate 14.00%
Windows 8.1 Pro 10.50%
Windows 7 Professional 8.50%
Windows 8 4.00%
Windows 8.1 Single Language 4.00%
Windows 8 Pro 3.00%
Windows 8 Single Language 2.50%
Windows 8.1 Pro with Media Center 1.50%
Windows 8.1 N 1.00%
Windows 8 Enterprise N 1.00%
Windows Seven Black Edition 1.00%
Windows 7 Home Basic 1.00%
Windows 8.1 Enterprise Evaluation 1.00%

Distribution by countryDistribution by country

United States installs about 53.00% of Autochk Proxy DLL.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 24.22%
Hewlett-Packard 17.58%
ASUS 17.19%
Acer 11.33%
Toshiba 10.16%
Lenovo 9.38%
Sony 3.13%
Alienware 2.34%
Samsung 2.34%
Intel 1.56%
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