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What is vssui.dll?

Part of VSS UI by Microsoft

What is it?

Displays current volume shadow copy backups and all installed shadow copy writers and providers. To view the command syntax for any of the commands in the following table, click the command name.
Description of vssui.dll from Microsoft
The Volume Shadow Copy Service (VSS) is a set of COM APIs that implements a framework to allow volume backups to be performed while applications on a system continue to write to the volumes. VSS provides a consistent interface that allows coordination between user applications that update data on disk (writers) and those that back up applications (requesters).
(vssui.dll is a system file that is installed with Windows)
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How is vssui.dll loaded?

Approved shell extension - vssui.dll has a CLSID (globally unique identifier) of {4648F940-EFE3-4BAB-9211-3BE45CD5029D}. 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.


What is the community is seeing?What is the community is doing?
About 0.2% of all Boost users have the vssui.dll file.Of the 0.2% of vssui.dll users, less than 1% have disabled it.
Typical file (disk image) location:

What else is related?

What Windows OS versions does this run on?

Windows Server 2008 Standard (6.0.6001.65536)

About Microsoft Corporation

Microsoft, founded in 1975 by Bill Gates and Paul Allen, is a veteran software company, best known for its Microsoft Windows operating system and the Microsoft More...
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File details

File name: vssui.dll
Publisher: Microsoft Corporation (verified)
Name: VSS UI
Description: Microsoft® Windows® Operating System
Version: 6.0.6001.18000 (longhorn_rtm.080118-1840)
Product version: 6.0.6001.18000
Size: 217.5 KB
Original file name: vssui.dll.mui
Windows file protection: Yes

Approved shell extension details

CLSID: {4648F940-EFE3-4BAB-9211-3BE45CD5029D}

Image hashes

MD5: 0d02b26e4740a3156353910c46393ec4
SHA-1: e206fbe9196b86b4b9f732c0da2f669212a2ce7d
SHA-256: e4680c9fe728919a41bf2848428e828aaed45cefb24fff54ca204b0392ad32ee

PE image details

CLR assembly: Yes
File entropy: 5.74257
File packed: No
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