ISA – Error Code: 500 Internal server Error (12217)

When you get Error Code: 500 Internal server Error (12217) on a website hosted behind a ISA server, there is something going wrong with ‘special characters’ This is easy to fix: Open ISA management: # Rightclick the specific webrule and click ‘Configure HTTP’ # Deselect ‘Vericy normalization’ Apply, Apply, test it! It works! 🙂

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