Applied updates Wednesday (two days ago). Found epheremal port range changed from 49152-65535 to 1024-65535.
Found this change broke the machine.
Applied patch to allow reserving specific ports. Tried command:
C:\Program Files\Microsoft Visual Studio 10.0\VC>netsh int ipv4 add excludedportrange tcp 1433 2
The process cannot access the file because it is being used by another process.
Can't find what's causing that. Multiple reboots, including safe mode with networking. Other netsh commands work. Process Monitor reveals no useful clues.
AAAAAAAAAA!