500 internal server error iis

Use one of the following methods: Delete the malformed XML element from the ApplicationHost. fargetix 500 mg config or Web config file Check the unidentified XML elements, and then install the relevant IIS modules HRESULT code 0x80070021 Error message: Server Error in Application "application name" HTTP Error 500 19 – Internal Server Error HRESULT: 0x80070021