iceweasel doesn't open research.microsoft.com
The bug exists, the iceweasel package maintainer is lazy and refuses to handle it.
Iceweasel cannot open research.microsoft.com as well as many pages on the site when cookies are enabled. For example, trying to open
results in a long interval with "Waiting for research.microsoft.com..." in the status line and afterward in the message
The connection to the server was reset while the page was loading.
The network link was interrupted while negotiating a connection. Please try again.
Debugging shows that it's a common bug for other systems too (Safari, some ancient Windows setups etc.), but not, say, for lynx, or for relatively modern Windows: