If you are seeing crashes in MSCORSVW.DLL, try this, it may help (and it won’t hurt):

Start-Job {
    Set-Alias ngen (dir (join-path ${env:\windir} "Microsoft.NET\Framework") ngen.exe -recurse |
    sort -descending lastwritetime
    )[0].fullName
    ngen executequeueditems
}

For more details, see this Connect bug:

• Uninstalling KB968380 RC in XP/Srv2003 causes .NET Runtime Optimization Service to crash