HTTP Error 500.19 - Internal Server Error on IIS 7 + Vista - Change


HTTP Error 500.19 - Internal Server Error

The requested page cannot be accessed because the related configuration data for the page is invalid.



This configuration section cannot be used at this path. This happens when the section is locked at a parent level. Locking is either by default (overrideModeDefault="Deny"), or set explicitly by a location tag with overrideMode="Deny" or the legacy allowOverride="false".


Solution:

Find the 

C:\Windows\System32\inetsrv\config\applicationHost.config

Change the values of following section from Deny to Allow 

<section name="handlers" overrideModeDefault="Allow" />

<section name="modules" allowDefinition="MachineToApplication" overrideModeDefault="Allow" />




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