Tag Archives: 12217

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! 🙂