is mscorsvw.exe bad?

I've noticed an unusual process starting up after I installed Visual Studio .NET 2005 b2.

mscorsvw.exe is .net 2.0's assembly optimizer. The good news is; it starts up and works away in the background optimizing .net assemblies for your pc. However I did notice, when installed on WindowsXP SP1 that has been upgraded to SP2 the mscorsvw.exe process starts up and claims an unbearable amount of CPU.

It is apparently supposed to optimize in the background after it does your core assemblies which should apparently only take a few minutes. If it doesn't you've got a problem.

My solution come coincidently when my install of windows conveniently died a week or two after, so I installed a combined fresh copy of WindowXPSP2 and the problem never appeared. So my only conclusion is it might have been something weird happening with .net 2.0 and my install of XPSP1 upgraded to SP2

For more information see this article which may answer any other questions: What is mscorsvw.exe and why is it eating up my CPU? http://blogs.msdn.com/davidnotario/archive/2005/04/27/412838.aspx

Print | posted on Wednesday, May 11, 2005 1:05 PM

Comments on this post

# RE: is mscorsvw.exe bad?

"It is apparently supposed to optimize in the background after it does your core assemblies which should apparently only take a few minutes. If it does you've got a problem." Don't you mean, "...If it _doesn't_, you've got a problem"?

Left by Ander on Apr 06, 2007 9:03 PM

# re: is mscorsvw.exe bad?

I don't use VS but I do use GTK environment to make apps. But since I don't have this VS installed I have never been asked to do anything with it. Recently I decided to try a game called Rapplez that some friends told me about. Game is from G Potato online games. After I installed some of these games to just try it out, I ended up getting prompts from my firewall to allow this mscorsvw.exe app to connect out to the internet. Its the first time I have ever been prompted like this before. My question is this harmless or is this game trying to do something I don't want it to do.

Left by cippycup on Jan 24, 2008 6:13 PM

# re: is mscorsvw.exe bad?

Maybe mscorsvw.exe was trying to find if it should help or block the game- Microsoft has tried to block the competion of the games MS provides with windows.

Left by Bobby on Jun 20, 2008 2:21 AM

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