What is the scheduled task "\Microsoft\Windows\Autochk\Proxy" on my Windows 8 computer?

"\Microsoft\Windows\Autochk\Proxy" is a scheduled task on Windows 8 system added as part of Windows installation.

You will see "\Microsoft\Windows\Autochk\Proxy" listed on Task Scheduler with the following information:

Name: Proxy
Location: \Microsoft\Windows\Autochk
Description: This task collects and uploads autochk SQM data if 
   opted-in to the Microsoft Customer Experience Improvement Program.
Actions: %windir%\system32\rundll32.exe /d acproxy.dll,PerformAutochkOperations
Triggers: At system startup
History: 

Programe file information about "acproxy.dll":

File name: acproxy.dll
File path: C:\windows\system32\acproxy.dll
File size: 12288 bytes
Last modified time: 7/25/2012 11:05:00 PM
File description: Autochk Proxy DLL
File version: 6.2.9200.16384 (win8_rtm.120725-1247)
Company name: Microsoft Corporation

"acproxy.dll" is scheduled to run at system startup time.

It is recommended to keep "\Microsoft\Windows\Autochk\Proxy" enabled as a scheduled task.

⇒System Scheduled Tasks on Windows 8

⇒⇒Windows 8 Scheduled Tasks