--- Sjoerd Hooft's InFormation Technology ---

User Tools

Site Tools


Recently Changed Pages:

View All Pages

View All Tags


WIKI Disclaimer: As with most other things on the Internet, the content on this wiki is not supported. It was contributed by me and is published “as is”. It has worked for me, and might work for you.
Also note that any view or statement expressed anywhere on this site are strictly mine and not the opinions or views of my employer.

Pages with comments

View All Comments


Fix: IIS error: serverruntime@appconcurrentrequestlimit setting is being exceeded

This was done and tested successful on a Windows Server 2016 with IIS 10.0

Change App Pool Queue Length

Open IIS manager:

  • IIS Manager → <app pool you need to change> → advanced setting → queue length
    • Default: 1000
    • New setting: 10000


Open an administrative command prompt:

  • Enter cd %windir%\System32\inetsrv\
  • Enter appcmd.exe set config /section:system.webserver/serverRuntime /appConcurrentRequestLimit:15000

This adds the following line to {C:\Windows\System32\inetsrv\config\applicationHost.config}:

  • <serverRuntime appConcurrentRequestLimit="15000" />
  • Default is 5000


  • Open notepad als admin
    • Open file C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Config\machine.config
      • Note that the framework version can change)
    • Replace <processModel autoConfig="true"/>
    • With <processModel enable="true" requestQueueLimit="15000" />

Reboot the server.



You could leave a comment if you were logged in.
fixiisappconcurrentrequestlimit.txt · Last modified: 2022/09/23 10:14 by sjoerd