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What is defragglershell.dll?

Part of DefragglerShell by Piriform Ltd

Description of defragglershell.dll from Piriform Ltd
Defraggler allow you to perform defragmentation of files on your hard disk. Defragmentation of your hard drive can significantly improve the performance of your computer. With this tool you can defrag exactly what you want, and drive map shows you blocks that are empty, not fragmented, or needing defragmentation, organizes empty disk space to further prevent fragmentation, and allow you to schedule defragmentation daily, weekly, or monthly.
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How is defragglershell.dll loaded?

Context menu handler - defragglershell.dll is typically associtated with identifier name of DefragglerShellExtension. Windows Explorer displays a context menu for a file object when it is clicked with the right mouse button. This context menu allows various operations to be performed on the file object from within Explorer, like printing it or opening it with another program.
Approved shell extension - defragglershell.dll has a CLSID (globally unique identifier) of {4380C993-0C43-4E02-9A7A-0D40B6EA7590} with and identifier of DefragglerShellExtension. When the system detects that the user is downloading an external program that runs as part of the Windows user interface, the system searches for a digital certificate or requests that the user approve the action. If you enable this policy, Windows only starts approved programs.

Community

What is the community is seeing?What is the community is doing?
About 0.3% of all Boost users have the defragglershell.dll file.Of the 0.3% of defragglershell.dll users, 14.3% have disabled it.
Typical file (disk image) location:
C:\Program Files\defraggler\defragglershell.dll

Are there other versions of DefragglerShell?

What else is related?

What Windows OS versions does this run on?

Microsoft Windows XP (5.1.2600.196608)
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File details

File name: defragglershell.dll
Publisher: Piriform Ltd (verified)
Name: DefragglerShell
Description: DefragglerShell
Version: 2.17.0.898
Size: 160.77 KB
Original file name: DefragglerShell.DLL

Digital certificate

Issued to: Piriform Ltd
Certificate authority: VeriSign
Effective date: 6/7/2011

Context menu handler details

Name: DefragglerShellExtension

Approved shell extension details

CLSID: {4380C993-0C43-4E02-9A7A-0D40B6EA7590}
Command: DefragglerShellExtension

Image hashes

MD5: bdba51f3ff4c3b3759a3829f94264311
SHA-1: 48511bd0045b5df4371006cdb3cf1687b9b5c573

PE image details

File packed: No
Import Table
advapi32.dll
kernel32.dll
ole32.dll
shell32.dll
user32.dll
Export Table
dllcanunloadnow
dllgetclassobject
dllregisterserver
dllunregisterserver
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