IIS - HTTP Error 500.19 with Umbraco and other sites

By Markus Johansson

When starting upp a website on fresh install of IIS I sometimes get this error:

HTTP Error 500.19

There is not much information more than the error that says: The requested page cannot be accessed because the related configuration data for the page is invalid.

The first thing I check is the permission settings for the folders, after this one could just try to remove elements from web.config to figure out what inside web.config that is considered "invalid". Since I work a lot with Umbraco, MOST of the time the problem is the <rewrite>-element. Without the right components installed on server these elements will be unknown to IIS and considered invalid.

What do to?

If you have the <rewrite>-element with <rules> configured in web.config make sure that you have installed "URL Rewrite", this is my favorite method:

  • Download "URL Rewrite Module 2.1" from Microsofts website (scroll to the bottom of the page).
  • Run the installer
  • Restart IIS to be on the safe side.


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