What is PxHelp20?

PxHelp20.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if PxHelp20.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for PxHelp20 drivers in need of updating

PxHelp20.sys file information

The process known as Px Engine Device Driver for Windows (version 2000/XP) or Roxio Creator (version DE 10.3) or ESSSONIC or Yahoo! Music Jukebox or PxHelper Device Driver for Windows (version 2000)

belongs to software Sonic_PrimoSDK or Sonic RecordNow or PX Engine or Roxio Media Manager or Sonic MyDVD Plus or RecordNow or Roxio Drag-to-Disc or Yahoo! Music Jukebox or Lightroom or OLYMPUS muvee theaterPack

by Sonic Solutions ( or Rovi or VERITAS Software (

Description: PxHelp20.sys is not essential for Windows and will often cause problems. The file PxHelp20.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 43,528 bytes (28% of all occurrences), 43,872 bytes and 25 more variants. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. There is no detailed description of this service. The file is not a Windows system file. The PxHelp20.sys file is certified by a trustworthy company. The PxHelp20.sys file is a Verisign signed file. PxHelp20.sys appears to be a compressed file. Therefore the technical security rating is 26% dangerous; however you should also read the user reviews.

Uninstalling this variant: There is a possibility to uninstall the associated program (Start > Control Panel > Uninstall a Program > Sonic_PrimoSDK or Roxio Media Manager) or visit the support page.

Recommended: Identify PxHelp20.sys related errors

Important: Some malware camouflages itself as PxHelp20.sys. Therefore, you should check the PxHelp20.sys 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

This file was added to my windows 7 C:\Windows\SysWOW64\drivers directory and caused boot failure on restart. The Windows startup repair could not fix it, but I noticed it in the repair log. I mounted the drive in another system and renamed the file to And, my Windows 7 64bit could boot up. I installed a few products before encountering the boot error: cyberlink power2go and sony picture motion browser. Not sure which created this bit of crap.
causes cd-drive to vanish.
installed with Sony Picture Motion Browser V2.1.00. Killed my Windows 7 machine. I could not reboot nor was the auto fix able to fix anything. The auto fix told me that pxhelp20.sys was corrupt. I renamed the file through the command line and now I can reboot. Not sure yet if I lost any functionality. I tried Gateway technical support first since this was a new computer they told me I had to ship the computer back to a service center to have it fixed. The person or persons who wrote this software should be fired or be requred to pay restitution to all of us who have wasted our time debugging our systems.
Avast! popped up a warning at the end of installing Winamp I followed the Avast! instructions, rebooted with a full pre-boot virus scan, and came up clean. Started Winamp, it invited me to upgrade to 5.61. Installed 5.61, and I didn't get any warning. Maybe installing 5.61 in the first place would have avoided the problem. PxHelp20.sys still shows in my C:\WINDOWS\system32\drivers folder :(
It's not a virus etc., it's just a stupid problematic and uwanted driver. PxHelp20.sys (ver no digital signature) appeared on my system most probably after installation of DivX Player Plus. At that moment, my DVD drive lost the ability to read/burn/recognize any Verbatim DVD media, TDK DVD+R, and some other. Even some discs burned+verified on my PC few weeks ago are inaccessible now! I canNOT read my own backup! Now, I am able tu burn only on old Sony DVD+/-R. On the other hand, it seems that problem with Kodak CD-R disappeared, not sure due to this driver. I'll uninstall DivXPlayer!
It's creation date and time is the same as most files in Winamp folder (Program Files). It bring "Lower Class Filter" to my DVD burner. Deducing, it supports Winamp burning capabilities. Drive filters change drive's behavior
  kk   (further information)
installs to M:\WINDOWS\SysWOW64\drivers in Win7 64bit & c:\windows\System32\Drivers\PxHlpa64.sys
  idaho pc wizard  
If your DVD won't work check&del HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}\LowerFilters Thanks to "Bob the troglodyte"
More comments can be found here:
    (further information)

Rating chart

Summary: Average user rating of PxHelp20.sys: based on 97 votes with 9 reviews. 31 users think PxHelp20.sys is essential for Windows or an installed application. 10 users think it's probably harmless. 17 users think it's neither essential nor dangerous. 18 users suspect danger. 21 users think PxHelp20.sys is dangerous and recommend removing it. 15 users don't grade PxHelp20.sys ("not sure about it").

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Best practices for resolving PxHelp20 issues

A clean and tidy computer is the key requirement for avoiding problems with PxHelp20. 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 repairing of your installation or, for Windows 8 and later versions, 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 PxHelp20.sys 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

PxHelp20.sys [all]