Symptom

Upon attempting to modify the Guest Username Policy on ISE 3.1 ( Work Centers > Guest Access > More > Settings > Guest Username Policy ) and modifying any value, when we save it we get the error 'You have entered text that appears to contain unsupported tags or markup language. Remove those characters and try again'. This behaviour has been observed when modifying any of the fields under 'Characters allowed in randomly-generated usernames'. Either modifying from 'All' to 'Custom' or simply modifying the minimum characters needed of either of these fields. Similar behaviour is observed with Guest Password Policy. For example, any attempt to change Minimum Password Length throws the error "'You have entered text that appears to contain unsupported tags or markup language. Remove those characters and try again'' once the user attempts to save it.

Conditions

ISE 3.1 Guest Username/Password Policy

Workaround

Use default info.

Further Problem Description