WCF Internal Server Error: Cannot Read Configuration File

The error message is clear enough to let us know that there is permission issue to the configuration file.

On the detailed error information, it says:

Config Error: Cannot read configuration file due to insufficient permissions.

This is caused by not having the read permission to Web.config file. The best workaround is to give everyone read access to the folder that contains the Web.config file.

To do this: right click on the folder > Properties > Security tab.


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