Versions

12,8,957,0	16.30%
12,8,839,0	6.52%
12,1,353,0	1.09%
12,1,323,0	1.09%
12,1,231,0	5.43%
12,0,637,0	1.09%
12,0,637,0	1.09%
11,6,505,0	13.04%
11,6,505,0	1.09%
11,6,434,0	33.70%
11,6,434,0	13.04%
11,6,385,0	1.09%
11,6,385,0	1.09%
11,0,669,0	1.09%
11,0,669,0	2.17%
11,0,654,0	1.09%

McMscShm.dll has 16 known versions, the most recent one is 12,8,957,0. The average file size is about 881.47 KB. It is an authenticode code-signed executable issued to McAfee by the certification authority VeriSign. The programs Search Protect, Yahoo! Install Manager and ooVoo Video Chat Toolbar have been observed as installing specific variations of McMscShm.dll.

McAfee MSC Shim Layer for McAfee SecurityCenter is a security solution that allows users to monitor their computer's security status and to know instantly whether their computer's virus, spyware, e-mail, and firewall protection services are up-to-date. Most McAfee SecurityCenter builds offer trial subscriptions to McAfee’s security software. The program generates security alerts which notify users about emergency virus outbreaks and other important security related messages.