What does IISReset do

Question

On IIS 6  what does an IIS reset do    Please compare to recycling an app pool and stopping and starting an ASP NET web site   If you replace a DLL or edit replace the web config on an ASP NET web site is that the same as stopping and starting that web site

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When you change an ASP NET website s configuration file  it restarts the application to reflect the changes     When you do an IIS reset  that restarts all applications running on that IIS instance

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It operates on the whole IIS process tree  as opposed to just your application pools   C   gt iisreset     IISRESET EXE  c  Microsoft Corp  1998-1999  Usage  iisreset  computername        RESTART            Stop and then restart all Internet services       START              Start all Internet services       STOP               Stop all Internet services       REBOOT             Reboot the computer       REBOOTONERROR      Reboot the computer if an error occurs when starting                          stopping  or restarting Internet services       NOFORCE            Do not forcefully terminate Internet services if                         attempting to stop them gracefully fails       TIMEOUT val        Specify the timeout value   in seconds   to wait for                         a successful stop of Internet services  On expiration                         of this timeout the computer can be rebooted if                         the  REBOOTONERROR parameter is specified                          The default value is 20s for restart  60s for stop                          and 0s for reboot       STATUS             Display the status of all Internet services       ENABLE             Enable restarting of Internet Services                         on the local system       DISABLE            Disable restarting of Internet Services                         on the local system

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IISReset restarts the entire webserver  including all associated sites   If you re just looking to reset a single ASP NET website  you should just recycle that AppDomain   The most common way to reset an ASP NET website is to edit the web config file  but you can also create an admin page with the following   public partial class Recycle   System Web UI Page       protected void Page Load object sender  EventArgs e                HttpRuntime UnloadAppDomain              Here s a blog post I wrote with more info  Avoid IISRESET in ASP NET Applications

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Here what s technet has to say about iisreset     You might need to restart Internet Information Services  IIS  before certain configuration changes take effect or when applications become unavailable  Restarting IIS is the same as first stopping IIS  and then starting it again  except it is accomplished with a single command

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IISReset restarts the entire webserver  including all associated sites   If you re just looking to reset a single ASP NET website  you should just recycle that Application Domain

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Editing the web config file or updating a DLL in the bin folder just recycles the worker process for that application  not the whole pool

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You can find more information about which services it affects on the Microsoft docs

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Application Pool recycling restarts the w3wp exe process for that application pool  hence it will only affect web sites running in that application pool   IISReset restarts ALL w3wp exe processes and any other IIS related service  i e  the NNTP or FTP Service   I think changing web config or  bin does not recycle the whole application pool  but I m not sure on that

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It stops and starts the services that IIS consists of   You can think of it as closing the relevant program and starting it up again

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IISReset stops and restarts the entire web server  including non-ASP NET apps  Recycling an app pool will only affect applications running in that app pool  Editing the web config in a web application only affects that web application  recycles just that app   Editing the machine config on the machine will recycle all app pools running     IIS will monitor the  bin directory of your application   Whenever a change is detected in those dlls  it will recycle the app and re-load those new dlls   It also monitors the web config  amp  machine config in the same way and performs the same action for the applicable apps

[asp.net] What does 'IISReset' do?

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