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What is mscorsvw.exe?

Part of Microsoft® .NET Framework by Microsoft

What is it?

.NET Runtime Optimization Service for the .NET Framework is a software framework developed by Microsoft that includes a large library and provides language interoperability. Programs written for the .NET Framework execute in a software environment known as the Common Language Runtime (CLR), an application virtual machine that provides services such as security, memory management, and exception handling. The class library and the CLR together make up the .NET Framework.
Description of mscorsvw.exe from Microsoft
.NET is an integral part of many applications running on Windows and provides common functionality for those applications to run. This download is for people who need .NET to run an application on their computer. For developers, the .NET Framework provides a comprehensive and consistent programming model for building applications that have visually stunning user experiences and seamless and secure communication.
(mscorsvw.exe is a system file that is installed with Windows)
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How does mscorsvw.exe run?

Service - mscorsvw.exe runs as a background Windows service called 'clr_optimization_v4.0.30319_32' (Microsoft .NET Framework NGEN v4.0.30319_X86). This is a system service that is installed with the Windows operating system and protected with Window's File Protection.


What is the community is seeing?What is the community is doing?
About 0.2% of all Boost users have the mscorsvw.exe process running.Of the 0.2% of mscorsvw.exe users, less than 1% have disabled it.
How stable is Microsoft® .NET Framework?
Based on crash data discovered by Boost, stability is a measure of how sound this particular process and the average percent of times it crashes.
Typical program1.26%
How resource intensive is mscorsvw.exe?
Comparison based on the average resource utilization across all programs.
0.00985% CPU98535.8%
Average CPU utilization across all programs is 0.00001%.
42.71 MB RAM198.3%
Average private memory utilization across all programs is 21.53 MB.
     78 /min3.5%
Average I/O read and write operations for all programs is 2,253 per minute.
     3 context switches/sec3.0%
Average context switches for all programs is 100 per second.
Typical file (disk image) location:

Are there other versions of Microsoft® .NET Framework?

Why are multiple of the same versions listed?

What else is related?

Microsoft® .NET Framework Stability

mscorsvw.exe crashes or has encountered a critical error 0.8900% of the time.
Error: Stopped working (APPCRASH)
Crashing module: ntdll.dll (still researching...)
Occurred: over 6 months ago
Error: Stopped working (APPCRASH)
Crashing module: ntdll.dll (still researching...)
Occurred: over 6 months ago

What Windows OS versions does this run on?

Windows 7 Home Premium (6.1.7600.0)
Windows 7 Ultimate (6.1.7600.0)
Windows Seven Black Edition (6.1.7600.0)
Windows 7 Home Premium (6.1.7601.65536)
Windows 7 Professional (6.1.7601.65536)
Windows 7 Ultimate (6.1.7601.65536)
Windows 8 Pro with Media Center (6.2.9200.0)

About Microsoft Corporation

Microsoft, founded in 1975 by Bill Gates and Paul Allen, is a veteran software company, best known for its Microsoft Windows operating system and the Microsoft More...
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File details

File name: mscorsvw.exe
Publisher: Microsoft Corporation (verified)
Name: Microsoft® .NET Framework
Description: .NET Runtime Optimization Service
Version: 4.0.30319.17929 built by: FX45RTMREL
Product version: 4.0.30319.17929
Size: 120.95 KB
Original file name: mscorsvw.exe
Windows file protection: Yes

Digital certificate

Certificate authority: Microsoft Corporation
Expiration date: 4/23/2013

Resource utilization

CPU utilization averages
Total CPU: 0.0157101330%
Privileged CPU: 0.0058565511%
User CPU: 0.00985358189875%
Privileged CPU time: 1511777.06 ms
Privileged CPU time /min: 20 ms
CPU cycle count: 524,322,707
CPU cycle count /min: 274,779,826
Context switches /sec: 3
Memory utilization averages
Committed memory: 89.45 MB
Peak committed memory: 95.16 MB
Paged memory: 42.71 MB
Peak paged memory: 45.08 MB
Paged system memory: 83.81 KB
Non-paged system memory: 10.74 KB
Working set memory: 35.04 MB
Peak working set memory: 40.99 MB
Min working set memory: 29.52 MB
Private memory: 42.71 MB
Page faults: 34,809,405
Page faults /min: 2,510
Process I/O averages
Total read operations: 1,050,293
Read operations /min: 76
Total read transfer: 309.31 MB
Read transfer /min: 97.93 KB
Total write operations: 34,412
Write operations /min: 2
Total write transfer: 8.8 MB
Write transfer /min: 657 Bytes
Total other operations: 21,397,674
Other operations /min: 1,532
Total other transfer: 39.63 MB
Other Transfer /min: 2.89 KB
Handle count average: 104
Thread count average: 6
Thread resource averages

Process details

Runs as (owner): User
Integrety level: System
Windows platform: 64-bit
Runs as a service: Yes
Parent Processes
Process Commands
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorsvw.exe -StartupEvent 2b0 -InterruptEvent 0 -NGENProcess 248 -Pipe 268 -Comment "NGen Worker Process"

Service details

Name: Microsoft .NET Framework NGEN v4.0.30319_X86
Service name: clr_optimization_v4.0.30319_32
Service type: Win32OwnProcess
Description: “Microsoft .NET Framework NGEN”

Image hashes

MD5: 86329c35ff23cfef0fb6c0023ba06bce
SHA-1: e3529cca09dd0e6c1d44a5bbe310074b6d53bd94
SHA-256: d915ce7ad564f97a1c3b047d5248b7ef67addc59687fbc90f1776c21daa0d3fd

PE image details

CLR assembly: Yes
Langauge*: Microsoft Visual C# / Basic .NET
File packed: No
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