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What is hmmapi.dll?

Part of Windows® Internet Explorer by Microsoft

(hmmapi.dll is a system file that is installed with Windows)
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How is hmmapi.dll loaded?

Shell open command - hmmapi.dll is typically associtated with identifier name of mailto with and identifier of C:\WINDOWS\system32\rundll32.exe "C:\Program Files\Internet Explorer\hmmapi.dll",MailToProtocolHandler %1. A Shell Open Command allows for an association of a file extension and a program. This association allows an application to be run when the icon or a context menu item is clicked upon in the Windows Explorer window.
Startup files (user) run - hmmapi.dll is registered with the run identifier 'Windows Live Hotmail' and the execution command '%ProgramFiles%\Internet Explorer\hmmapi.dll' in the Windows registry HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run. Run keys are startup registry keys that are used to launch an application automatically when a user logs into Windows.


What is the community is seeing?What is the community is doing?
About 0.5% of all Boost users have the hmmapi.dll file.Of the 0.5% of hmmapi.dll users, less than 1% have disabled it.
Typical file (disk image) location:
C:\Program Files\internet explorer\hmmapi.dll

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)

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: hmmapi.dll
Publisher: Microsoft Corporation (verified)
Name: Windows® Internet Explorer
Description: Microsoft HTTP Mail Simple MAPI
Version: 8.00.6001.18702 (longhorn_ie8_rtm(wmbla).090308-0339)
Product version: 8.00.6001.18702
Size: 67 KB
Original file name: HMMAPI.DLL
Windows file protection: Yes

Shell open command details

Name: mailto
Command: C:\WINDOWS\system32\rundll32.exe "C:\Program Files\Internet Explorer\hmmapi.dll",MailToProtocolHandler %1

Startup files (user) run details

Name: Windows Live Hotmail
Command: %ProgramFiles%\Internet Explorer\hmmapi.dll

Image hashes

MD5: c44e7a5bea311bd8f3dd973f107f24ec
SHA-1: be6edb20aa94b33ad363c884d5f939335f121776
SHA-256: f12e6332d115bdc14c209e6fa637df9a35e71b0f1ce7f80a8e6153a0cf6ca79f

PE image details

File packed: No
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