SQUID won't show http://support.microsoft.com

[Gob]

Hi
When squid is enabled we cannot access support.microsoft.com

Tried PFS 1.2 and the latest 1.2.1 but still experiencing this proble.

I had this problem on our old IPcop box but upgrading to a later version fixed the issue.
I found various posts on the internet saying that the following lines in squid.conf will fix the problem but whenever I add them as custom options, I cannont restart squid. They appear to be correctly formed within squid.conf

Fix broken sites by removing Accept-Encoding header

acl broken dstdomain support.microsoft.com
acl broken dstdomain .digitalspy.co.uk
header_access Accept-Encoding deny broken

Any suggestions?
Thanks
Gordon