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What is dfshim.dll?

Part of Microsoft® .NET Framework by Microsoft

What is it?

ClickOnce Application Deployment Support Library is part of the .Net Frameworks ClickOnce deployment and installation methods for applications. The deployment and update activities can be controlled through the use of a pair of XML manifest files that describe the components of the system and the deployment activities that should occur.
Description of dfshim.dll from Microsoft
ClickOnce exists to simplify client deployment, but what does that mean? What problems is ClickOnce going to enable us to avoid? Client deployment is hard because it happens on each of many clients, potentially at many locations, and your code and all of the associated components have to work on all of the target machines.
(dfshim.dll is a system file that is installed with Windows)
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How is dfshim.dll loaded?

Approved shell extension - dfshim.dll has a CLSID (globally unique identifier) of {E37E2028-CE1A-4f42-AF05-6CEABC4E5D75} with and identifier of Shell Icon Handler for Application References. 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.
Microsoft® .NET Framework is loaded by:


What is the community is seeing?What is the community is doing?
About 0.1% of all Boost users have the dfshim.dll file.Of the 0.1% of dfshim.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?

Microsoft Windows XP (5.1.2600.131072)
Microsoft Windows XP (5.1.2600.196608)
Microsoft Windows XP (5.2.3790.131072)
Windows Vista (TM) Home Premium (6.0.6000.0)
Windows Vista (TM) Home Basic (6.0.6001.65536)
Windows Vista (TM) Home Premium (6.0.6001.65536)
Windows Vista (TM) Ultimate (6.0.6001.65536)
Windows Vista (TM) Business (6.0.6002.131072)
Windows Vista (TM) Home Basic (6.0.6002.131072)
Windows Vista (TM) Home Premium (6.0.6002.131072)
Windows Vista (TM) Ultimate (6.0.6002.131072)
Windows Vista Home Premium (6.0.6002.131072)

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: dfshim.dll
Publisher: Microsoft Corporation (verified)
Name: Microsoft® .NET Framework
Description: ClickOnce Application Deployment Support Library
Version: 4.0.31106.0 (Main.031106-0000)
Product version: 4.0.31106.0
Size: 1.08 MB
Original file name: dfshim.dll.mui
Windows file protection: Yes

Digital certificate

Certificate authority: Microsoft Corporation
Effective date: 10/22/2008
Expiration date: 1/22/2010

Approved shell extension details

CLSID: {e82a2d71-5b2f-43a0-97b8-81be15854de8}
Command: ShellLink for Application References

Image hashes

MD5: fa4b5940b31853ade67a73026884c8c9
SHA-1: a329fce2b14118fb32bee1875ca7f5897aede155
SHA-256: f63f7b90f0fc3bdf296eef69e70561ed218e2a08c5d8e69133d5ec7197db50fa

PE image details

File entropy: 6.74189
File packed: No
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