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Cannot read configuration file due to insufficient permissions - HTTP Error 500.19 - Internal Server Error

By Ashok Nalam on 17 Jan 2021 | Category: ASP.NET | Tagged: iis ASP.NET web-config 
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Issue

After setting up the web App code on my local machine today, I got an error like  “Cannot read configuration file due to insufficient permissions - HTTP Error 500.19 - Internal Server Error - The requested page cannot be accessed because the related configuration data for the page is invalid."
 
Web App Error - Cannot read configuration file due to insufficient permissions
Fig 1: Web App Error - Cannot read configuration file due to insufficient permissions

Resolution: 

It resolved when we add read access to IIS_IUSRS group on web app folder. 
 
Also, make sure iis features are on under “Application Development feature” from “Turn Windows Features on or Off”

Set Read access to IIS_IUSRS on Web App folder
Fig 2: Set Read access to IIS_IUSRS on Web App folder

References:

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