What is PDSched.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 PDSched.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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PDSched.exe file information

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

The process known as PDSched Module belongs to software PDScheduler or PerfectDisk by Raxco Software (

Description: PDSched.exe is not essential for the Windows OS and causes relatively few problems. The file PDSched.exe is located in a subfolder of "C:\Program Files" (typically C:\Program Files\Raxco\PerfectDisk\). Known file sizes on Windows 10/8/7/XP are 241,731 bytes (73% of all occurrences) or 237,635 bytes. 
The program is not visible. It is not a Windows system file. The application can be uninstalled in the Control Panel. Therefore the technical security rating is 28% dangerous, however you should also read the user reviews.

Uninstalling this variant: It is possible to uninstall PerfectDisk software via Windows Control Panel/Add or Remove Programs (Windows XP) or Programs and Features (Windows 10/8/7).

Recommended: Identify PDSched.exe related errors

External information from Paul Collins:

Important: Some malware camouflages itself as PDSched.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the PDSched.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

Perfect Disk Scheduler (Defragmentation Software by Raxco)
Roxio Perfect Disk Scheduler (Disk Defrag Program)
Virus!!! Upon execution, this memory-resident worm drops a copy of itself as PDSCHED.EXE in the Windows system folder.
  M.E.T.H.O.D MAN   (further information)
Perfect Disk
Raxco Perfect Disk schedular agent, safe if in raxco program folder. NOT SAFE if in windows folder, this is a virus.
  PC Addict  
Perfect Disk Scheduler (Defragmentation Software by Raxco)
Scheduler for PerfectDisk Degrag from Raxco
PerfectDisk scheduler
  Money D. Luffy  
The scheduler for "Perfect Disk" (defragmentation-program)
module for Perfectdisk by Raxco
  Albert McDougal  
2 different associated files: Good - Raxco Perfect Disk Defrag Scheduler. & BAD - SDBOT.CN WORM!
  Jon Eckertson   (further information)
Roxio Perfect Disk Scheduler (Disk Defrag Program)
The scheduler for "Perfect Disk" (defragmentation-program)

Rating chart

Summary: Average user rating of PDSched.exe: based on 20 votes with 13 user comments. 14 users think PDSched.exe is essential for Windows or an installed application. One user thinks it's probably harmless. 2 users think it's neither essential nor dangerous. 3 users think PDSched.exe is dangerous and recommend removing it. One user is not sure about it.

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Best practices for resolving PDSched issues

A clean and tidy computer is the key requirement for avoiding problems with PDSched. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the PDSched.exe process on your computer, the following programs have proven to be helpful: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

PDSched.exe [all]