As the title says, when our users try to install Adobe applications via the new (and execrable) Creative Cloud software subscription service, those installs and updates fail when going through our Ironports with a lovely "download appears corrupted" message.
We're using WCCP on our core routers to redirect web traffic through the S370 proxies. When I exempt those users from web redirection (via the access list that controls wccp on those routers), the installs work correctly.
One of the frustrating parts of this problem is that none of the requests appear to be blocked. If I can trust the Creative Cloud app's progress bar, the application is completely downloaded and just starts to be extracted when the error occurs.
I did a packet capture on a client when the installation failed, but I didn't find anything particularly enlightening there.
Any suggestions would be most welcome.