I got this error message"Error Code: 414 Request-URL too Large. The size of the request header is too large. Contact your Forefront TMG administrator. (12215) "

Backgroup:

when the client (OS :windows 7) want to access to internet via TMG, it got this error message"

• Error Code: 414 Request-URL too Large. The size of the request header is too large. Contact your Forefront TMG administrator. (12215)

"

Could you give me a favor to solve this issue.

Many thanks

Hanson