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What is ngen.exe?

Part of Microsoft® .NET Framework by Microsoft

(ngen.exe is a system file that is installed with Windows)
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How does ngen.exe run?

Process - ngen.exe is an instance of a running program. This program executes under the SYSTEM account within Windows with extensive privileges on the local computer, and acts as the computer on the network. ngen.exe is executed by the process ngentask.exe (Microsoft® .NET Framework by Microsoft).


What is the community is seeing?What is the community is doing?
About 0.4% of all Boost users have the ngen.exe process running.Of the 0.4% of ngen.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%
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

ngen.exe crashes or has encountered a critical error 0.8900% of the time.
Error: Stopped working (APPCRASH)
Crashing module: ntdll.dll (still researching...)
Occurred on: August 7, 2013
Error: Stopped working (APPCRASH)
Crashing module: ntdll.dll (still researching...)
Occurred: over 3 months ago
Error: Stopped working (APPCRASH)
Crashing module: ntdll.dll (still researching...)
Occurred: over 3 months ago

What Windows OS versions does this run on?

Windows 8 (6.2.9200.0)
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: ngen.exe
Publisher: Microsoft Corporation (verified)
Name: Microsoft® .NET Framework
Description: Microsoft Common Language Runtime native compiler
Version: 4.0.30319.17929 built by: FX45RTMREL
Product version: 4.0.30319.17929
Size: 165.91 KB
Original file name: ngen.exe
Windows file protection: Yes

Digital certificate

Certificate authority: Microsoft Corporation
Effective date: 10/10/2011
Expiration date: 10/1/2013

Resource utilization

CPU utilization averages
Total CPU: 0.0815885302%
Privileged CPU: 0.0485324571%
User CPU: 0.03305607308118%
Memory utilization averages
Min working set memory: 0 Bytes

Process details

Runs as (owner): System
Windows platform: 64-bit
Parent Process
Child Process
Process Commands
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe" install "System.Runtime, Version=, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" /NoDependencies /noroot /versioC:v4.0.30319 /LegacyServiceBehavior
"C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe" ExecuteQueuedItems /LegacyServiceBehavior

Image hashes

MD5: a128a97a5f87841b932c2820a8dcf40e
SHA-1: bbef7487d7ebc011dd75c216a253935310c181be
SHA-256: 1001cfb54f7d0d7073e64138ad449e26aa4a30b028021f8f8653799682ea3cca

PE image details

File packed: No
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