2012 Core Catalog Download Error

[houska]

Just upgraded to Architectural 2012. Had same problem.

For the benefit of others who might find this thread like I did, I solved it by tweaking certain Windows 7 TCP/IP settings that were causing large downloads to hang (and the core catalogs download is a doozy at 2 Gig).

The instructions I followed can be found by googling "disable tcp auto tuning windows 7".

The issue is that if your machine thinks it is connected to a high-speed network it will in Vista/W7 attempt to increase the size of the window of data it will send/accept without an acknowledgement from the other side.

This would increase throughput on a fast network connection, but actually has little benefit if e.g. your nice high-speed router is connected to a DSL modem, and your pipe to the internet backbone is the constraining factor, not your window size.

In fact, it may hang large downloads - like the core catalogs - if you have older equipment that somehow gets confused by what Windows is trying to do.

So - if someone else has the same issue, try if this fixes it!