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HTTP Error 500.19 - Internal Server Error. The requested page cannot be accessed because the related configuration data for the page is invalid


The root cause of the error was related to how IIS 10 (windows SRV 2022) handled the “<Authentication>” statements in the section of the “web.config” file as shown in the screenshot below. In Windows Server 2008 R2 (IIS 6), the statements in the “<Authentication>” section of the “web.config” file were accepted without any issue, however the same did not apply to IIS 10 (WSRV 2022). The solution was to remove the “<Authentication>” section from the “web.config” file, and then make the same statements using the IIS interface Authentication page.

Web.Config file ”<Authentication>” section.


IIS Interface Authentication page.