Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

2005, 1, 1, 4 80.00%
2004, 6, 13, 1 20.00%



YMMAPI Module by Yahoo! Inc. (Signed)

Remove YMMAPI.dll
Version:   2004, 6, 13, 1
MD5:   578adb898fc39a9b7cf52e8794cf1235
SHA1:   046065aa86da85b26291239efd855443f3463891
SHA256:   6e98c32a2544b3be21ad8fa6f3972c311258a0f0bf9e895302e6081fedaa9610


ymmapi.dll is loaded as dynamic link library that runs in the context of a process. It is installed with a couple of know programs including Yahoo! Browser Services published by Yahoo! Inc., Yahoo! Toolbar from Yahoo! Inc. and Yahoo! Toolbar by Yahoo! Inc.. The file is digitally signed by Yahoo! Inc. which was issued by the VeriSign certificate authority (CA).


File name:ymmapi.dll
Publisher:Yahoo! Inc.
Product name:YMMAPI Module
Typical file path:C:\Program Files\yahoo!\common\ymmapi.dll
File version:2004, 6, 13, 1
Product version:1, 0, 0, 0
Size:176.07 KB (180,296 bytes)
Build date:6/13/2004 8:50 PM
Issued to:Yahoo! Inc.
Authority (CA):VeriSign
Effective date:Thursday, August 10, 2006
Expiration date:Thursday, September 3, 2009
Digital DNA
File packed:No
More details


The following programs will install this file
Yahoo! Inc.
18% remove
The most unique attribute of Yahoo! Browser Services is its ability to update and add new services on the fly without a browser restart or even reloading the page! As a user, this means no more installers to run or losing your place on the web. For developers, you can check for and activate new services with a single function call, pending user approval - we handle the complexity of software distribution and updates for you. Because we...
Yahoo! Inc.
  52% remove
Yahoo! Toolbar is a toolbar that installs on the Internet Explorer and Firefox browsers, within the context of internet access functions. It allows access to several functions, including Yahoo! Search and Yahoo! Mail. "Some versions of Yahoo! Toolbar allow you to share information with Yahoo! about sites you visit to improve Yahoo! services. Yahoo! Toolbar will transmit the following information to Yahoo!: complete web site addresses...
Yahoo! Inc.
29% remove
This program notifies you when new messages arrive in your Yahoo mailbox.
Yahoo! Inc.
20% remove
Yahoo Install Manager manages Yahoo program downloads and installations. The install manager keeps track of such programs and assists in the installations to put things in their proper places.


Context menu handlers
Located in '*\shellex\ContextMenuHandlers'
  • Name: 'Yahoo! Mail'
Shell open commands
  • mailto
Approved shell extensions
Located in the registry at 'SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved'
  • 'Yahoo! Mail' with CLSID {5464D816-CF16-4784-B9F3-75C0DB52B499}

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Microsoft Windows XP 80.00%
Windows Vista Home Premium 20.00%

Distribution by countryDistribution by country

United States installs about 100.00% of YMMAPI Module.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 80.00%
Gateway 20.00%
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