Caching Windows 8.1 Updates

[spies]

From looking at the squid logs, it looks like an .esd file is the main download for the8.1 upgrade, would using the Windows Updates refresh pattern include this file or is some manual adjustment of the squid.inc file needed in order for it to cache it?

Squid appears to be caching the cabs, psf (after adding them to the squid.inc) and exe's just fine.

Thanks