HTTP Error 500.0 - Internal Server Error

Symptoms

When you attempt to access XIA Configuration Server you may see the following error message:

The page cannot be displayed because an internal server error has occurred.

More Information

Accessing a specific page such as the following may cause the page to be displayed but with incorrect styling and images missing.

https://DEMO-SRV01/XIAConfiguration/default.aspx

Cause

This error can occur if the web server account does not have the impersonate a client after authentication user right.

Typically the Network Service account has this right so the issue is normally only seen when XIA Configuration Server has been installed using a custom web server account.

This error is normally only seen when specific security policies have been applied by your organization to the server where XIA Configuration Server is installed.

Resolution

Check that the web server account is a member of the IIS_IUSRS local group.
In the Local Security Policy (secpol.msc) select Local Policies then select User Rights Assignment.
Open the impersonate a client after authentication user right.
Ensure that the IIS_IUSRS group has this right

- or -

Reinstall XIA Configuration Server using Network Service as the web server account.