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Running, Malicious, Unwanted, Memory Hogs

Welcome to the PC Pitstop Process Library. We maintain an extensive list of common processes running on today’s PCs. Within this library you can learn more about the processes running on your machine.

Process Library Detail

What is pd91engine.exe? PD91Engine Module?

Vendor:      Raxco Software
Product:     
Vendor Website:      http://www.perfectdisk.com/
Last Seen by PC Pitstop:      No Data

Process is Bad PC Pitstop has analyzed this process and determined that there is a high likelihood that it is bad.
Process is questionablePC Pitstop has analyzed this process and determined that the safety of this process is questionable.
Process is goodPC Pitstop has analyzed this process and determined that there is a high likelihood that it is good.
Process is goodThis process is a Microsoft or Windows process, but many viruses use this file name to escape notice.

Purpose: PD91Engine.exe is part of Perfectdisk defrag from Raxco Software.

pd91engine.exe is a user invoked program and a normal part of PC operations. No action required.


pd91engine.exe is known to be a bad process. Learn more about protecting your PC from these bad processes with PC Matic.
pd91engine.exe could be a harmful process. Learn more about protecging your PC from these potential harmful processes with PC Matic.
This information brought to you by PC Matic. PC Matic's real-time protection, Super Shield, blocks ALL bad and unknown threats to keep your PC secure.
pd91engine.exe is a Microsoft or Windows process but some versions of this exe carry viruses.
Learn more about protecting yourself from bad versions of this file with PC Matic.

Percentage of recently scanned PC's with this process running: 0.00%
Average CPU use for this program: 0%
Average RAM for this program: 1 MB


Program Name MD5 Count
pd91engine.exe

MD5 Hashes

# Status MD5 Revision Name Size
1 Status 0x843e424166ec6aad1498f98c170f6cba 1/19/2012 12:32:00 AM Unknown Unknown PD91Engine Module 889 KB
2 Status 0xc8c61b7c8bb184a4772988380afb9b07 8/21/2011 8:31:00 PM Unknown Unknown PD91Engine Module 889 KB
3 Status 0x30c8d9bf31c6f1f9b1e6dd4a63baaf5d 2/27/2011 1:43:00 PM Unknown 9, 0, 0, 39 PD91Engine Module 873 KB
4 Status 0xe92e3168a058aeb7cf1cf292edd4d7c1 6/13/2010 1:38:00 AM Unknown Unknown PD91Engine Module 873 KB
5 Status 0x32db8f9928f5b0ffc6e5544b56ff8a60 12/16/2009 9:43:00 AM Unknown Unknown PD91Engine Module 889 KB
6 Status 0x7705b7b066c8fd4a0b4b7e1bed2bcc91 9/17/2009 8:33:00 AM Unknown 9, 0, 0, 44 PD91Engine Module 873 KB


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