Migrated a Joomla-Website from 1.5 to 3.2.1. Worked well so far -> can change Menues, Articles an Template and save it. But, as son as a want to save changes under configuration -> Site/System/Server i will get the following Error:
FastCGI Error / The FastCGI Handler was unable to process the request. / Error Details: •Error Number: 13 (0x8007000d). •Error Description: The data is invalid. HTTP Error 500 - Server Error.
Internet Information Services (IIS)
Does anybody know why.