After receiving a windows update that took forever to load and install, I now have mscorsvw.exe running at a high CPU rate and more updates to install from Windows. I am now running in safe mode.
Was one of the updates related to .NET Framework? If so, this is FYI...Mscorsvw.exe
is a legitimate process that is part of the Microsoft .NET Runtime Optimization Service. The file is used to precompile Microsoft .NET framework assemblies in the background and used by programs requiring .NET Framework. Microsoft released Article ID: 2571181
advising that a computer can stop responding in some cases if you install .NET Framework 4 or when the .NET Runtime Optimization Service starts.
The .NET Framework Optimization Service typically runs when the .NET Framework is installed on a computer or when the .NET Framework is serviced by Windows Update. If you install any .NET Framework updates, it is not uncommon after the patch is installed for mscorsvw.exe to show high amounts of CPU usage for a short duration.
However, if there are entirely new with processes showing up that needs to be investigated.