I added an exception and even attempted to briefly disable the Firewall but nothing. I also tried with and without "old" at the beginning of the address string and nothing. I also attempted with -o stratum+tcp://nist5.blocksuckernation.com:5003 and the stratum_subscribe always times out.
Then it may be the pool crapping itself.
Here's my .bat file for BSOD, just change the BWK address to yours:
ccminer -a nist5 -o stratum+tcp://pool.bsod.pw:3834 -u bP5ZCkLNRzjJmpjb5RDLMkWtdD1hRihtjW -p c=BWK
pause