"Illegal parameter value length" events when parameter is already at that value

Try adding the parameter, explicitly by name, to the security policy. Ensure that the byte length attribute for the parameter is configured for the appropriate maximum length. You can also try changing the value of the parameter wildcard to "Any" which will also prevent the violation but can leave you vulnerable to buffer overflow attempts or other byte-length related attacks. If you already have all the parameters added to the policy, and you know there won't be any additional parameters in the future, you can remove the wildcard. Don't forget to click both Save and Apply Policy options when you make your changes.