Welcome to the Forum !
Do you have a Rockwell Automation TechConnect support contract, and there was something wrong with the RA download server ? Or do you mean that you weren't eligible to download the software ? Did you actually speak with RA Tech Support or only try the website ?
Ultra
Master is very old software, for the old Ultra 100/200 servo controllers. It was from the 1990's era when RA bought Electro-Craft, and re-branded the IQ series drives and IQ-Master software. It hasn't even been tested or supported with Windows XP.
IQ-Master itself is in the RA Knowledgebase,
Article ID # 3064 (TechConnect Required).
Ultra
Ware is a little more modern; it supports the Ultra 1500, 3000, 5000, and Kinetix 3 servo controllers. It's available from the RA download server.
Start here:
http://ab.rockwellautomation.com/Motion-Control/UltraWARE-Software
But your basic question is "how can I download UltraMaster software", and I've provided links to two software packages that are not UltraMaster.
That software might not be available from Rockwell Automation except directly from Technical Support, or maybe not at all. It used to be in the "Allen-Bradley Products" section, but I can't find it on the new modern download server at all.
So it may be that Rockwell Automation has finally stopped supporting that software product.
What exact servo product are you working with ?