What is w3wp exe

Question

I have a WCF service running under a service user on my local system  Every time I try to debug it is giving me a message Attach Security warning   In Visual Studio  by default  even without attaching   I get this error      Attaching to this process can potentially harm your computer  If the   information below looks suspicious or you are unsure  do not attach to   this process      Name  C  Windows System32 inetsrv w3wp exe   What is w3wp exe  According to a Google search  I think it is related to IIS   But what does it do  What setting should be changed so that this won t give this message everytime I try to debug on my local system

User · Answer

w3wp exe is a process associated with the application pool in IIS  If you have more than one application pool  you will have more than one instance of w3wp exe running  This process usually allocates large amounts of resources  It is important for the stable and secure running of your computer and should not be terminated   You can get more information on w3wp exe here  http   www processlibrary com en directory files w3wp 25761

User · Answer

A worker process runs as an executables file named W3wp exe A Worker Process is user mode code whose role is to process requests  such as processing requests to return a static page  The worker process is controlled by the www service  worker processes also run application code  Such as ASP  NET applications and XML web Services  When Application pool receive the request  it simply pass the request to worker process  w3wp exe    The worker process   w3wp exe    looks up the URL of the request in order to load the correct ISAPI extension  ISAPI extensions are the IIS way to handle requests for different resources  Once ASP NET is installed  it installs its own ISAPI extension  aspnet isapi dll and adds the mapping into IIS  When Worker process loads the aspnet isapi dll  it start an HTTPRuntime  which is the entry point of an application  HTTPRuntime is a class which calls the ProcessRequest method to start Processing    For more detail refer URL   http   aspnetnova blogspot in 2011 12 how-iis-process-for-aspnet-requests html

User · Answer

An Internet Information Services  IIS  worker process is a windows   process  w3wp exe  which runs Web applications  and is responsible for   handling requests sent to a Web Server for a specific application   pool    It is the worker process for IIS  Each application pool creates at least one instance of w3wp exe and that is what actually processes requests in your application  It is not dangerous to attach to this  that is just a standard windows message

User · Answer

Chris pretty much sums up what w3wp is   In order to disable the warning  go to this registry key   HKEY CURRENT USER Software Microsoft VisualStudio 10 0 Debugger   And set the value DisableAttachSecurityWarning to 1

[wcf] What is w3wp.exe?

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