I recently configured a trial Windows Server 2012 R2 VM to start fiddling with it and use it later for other not so important things. One beautiful winter night, I observed that even if I am not doing single nasty thing on this machine, still I see my CPU usage 100%. Whoa, who is eating my cookies? At first glance in task manger, I found two alien processes gobbling CPU and some RAM .Net Runtime Optimization Service (also known as mscorsvw.exe) Microsoft Common Language Run-time native compiler Until I was not aware of it, I thought it has to do something with .Net framework, I guess and the name suggest it is optimizing something. After few reads by people at Microsoft and others I finally understood the importance of mscorsvw.exe and why / when does it run. I probably will not repeat the whole story and violate Web DRY » Read more