Visual Studio fails to Load with .NET Runtime Optimization Service Error

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

Cliff Cotterill - 16 Oct 2007 18:38 GMT

After Installing Visual Studio 2005 the "splash screen" appears then VS
aborts with these two Application Event Log Errors:

.NET Runtime Optimization Service (clr_optimization_v2.0.50727_32) - Failed
to compile: C:\Program Files\Microsoft Visual Studio
8\VC\redist\amd64\Microsoft.VC80.CRT\msvcm80.dll . Error code = 0x80004005

.NET Runtime version 2.0.50727.832 - Fatal Execution Engine Error (7C812A5B)
(800703e9)

There is no explanation at the Microsoft support site. What causes this?
Is there a 'fix'?

I had installed .NET 3.0 on this system (XP Pro. 5.1.2600), but uninstalled
it and re-installed .NET 2.0 with the Visual Studiio 2005 installation.

Reply to this Message

Cliff Cotterill - 17 Oct 2007 16:51 GMT

I found the 'solution' at
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2255240&SiteID=1

> Re: .NET Runtime version 2.0.50727.42 - Fatal Execution Engine Error
> (7C812A5B) (800703e9) while starting Visual Studio 2005 IDE Same problem
> here. Win XP Pro/SP2, IE7, .NET Frameworks 1.1 and 2.0 installed, MS
> Visual Studio 2005 (no SP1 installed), MS >SQL Server 2005 and Visual
> Studio 2005 Extensions for Windows Workflow Foundation installed.

>Reinstall of .NET Framework 2.0 did not help, but removal of Visual Studio
>2005 Extensions for Windows Workflow Foundation did >the trick. It seems
>like latest security updates somehow interfered with these Extensions and
>IDE could not load them. I suspect latest >security updates have mistakenly
>replaced an assembly which is a part of Windows Workflow Foundation
>Extensions.

>Thanks everybody for pointing this out.

> Fadil Mesic

Reply to this Message

Visual Studio fails to Load with .NET Runtime Optimization Service Error

Free Magazines