Versions

2.1.1.838	22.22%
2.1.1.419	11.11%
2.1.0.286	11.11%
2.1.0.271	11.11%
2.1.0.152	11.11%
2.1.0.152	11.11%
2.1.0.152	11.11%
2.1.0.152	11.11%

mcafeewin32guisupportdll.dll has 8 known versions, the most recent one is 2.1.1.838. The average file size is about 485.6 KB. It is an authenticode code-signed executable issued to McAfee by the certification authority VeriSign. Some variations of the file have been seen to be installed with the program McAfee Agent from McAfee, Inc..

McTray Support Library is part of McAfee SecurityCenter, 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.