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

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.

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