Squid and Windows updates

Greets,

I have Squid running on a local box. We do a lot of Windows Updates. My problem is that Squid doesn’t seem to be caching the Windows Updates. I have read several posts in the net relating to this issue but haven’t seen any definitive answers as to which items in the config file are crucial to getting this to happen. If I download a large file to my desktop, delete it, then download it again, it seems to cache it fine. But with Windows updates, that doesn’t seem to be the case. I don’t believe the file size is the issue. I have it set to 25 MB.

Is anybody using Squid to cache Windows updates that could email or post their squid.conf file?

Thanks,
Brian