Versions

4.0.0.1	75.00%
4.0.0.1	8.33%
3.1.0.1	16.67%

appleossmgr.exe has 3 known versions, the most recent one is 4.0.0.1. It is started as a Windows Service called 'Apple OS Switch Manager' with the name 'AppleOSSMgr' and described as “Provides support for switching between Mac OS X and Windows”. . In addition, it is run under the context of the SYSTEM account with extensive privileges (the administrator accounts have the same privileges). The average file size is about 202.2 KB. It is an authenticode code-signed executable issued to Apple Inc. by the certification authority VeriSign. This is a .NET Common Language Runtime (CLR) assembly. During the process's lifecycle, the typical CPU resource utilization is about 0.0000% including both foreground and background operations, the average private memory consumption is about 2 MB with the maximum memory reaching around 2.47 MB.

This is the OS Manager portion of Boot Camp which provides support for switching between Mac OS X and Windows. Boot Camp is a utility included with Apple Inc.'s Mac OS X v10.5 "Leopard", v10.6 "Snow Leopard", and v10.7 "Lion" operating systems that assists users in installing Microsoft Windows XP, Windows Vista, Windows 7, or GNU/Linux operating systems on Intel-based Macintosh computers.