Windows 7, DirectX 11 and FSHost not playing nicely..

[el_kab0ng]

FSPortTest version 1.6
Using server: www.chocolatesoftware.com

Testing ports for FS2002, FS2004, and FSHostClient for FSX...

Port 23456... OK
Port  6073... OK
Port  2300... OK
Port  2301... OK
Port  2302... OK
Port  2303... OK
Port  2304... OK
Port  2305... OK
Port  2306... OK
Port  2307... OK
Port  2308... OK
Port  2309... OK
Port  2310... OK
Port  2311... OK
Port  2312... OK
Port  2313... OK
Port  2314... OK
Port  2315... OK
Port  2316... OK
Port  2317... OK
Port  2318... OK
Port  2319... OK
Port  2320... OK
Port  2321... OK
Port  2322... OK
Port  2323... OK
Port  2324... OK
Port  2325... OK
Port  2326... OK
Port  2327... OK
Port  2328... OK
Port  2329... OK
Port  2330... OK
Port  2331... OK
Port  2332... OK
Port  2333... OK
Port  2334... OK
Port  2335... OK
Port  2336... OK
Port  2337... OK
Port  2338... OK
Port  2339... OK
Port  2340... OK
Port  2341... OK
Port  2342... OK
Port  2343... OK
Port  2344... OK
Port  2345... OK
Port  2346... OK
Port  2347... OK
Port  2348... OK
Port  2349... OK
Port  2350... OK
Port  2351... OK
Port  2352... OK
Port  2353... OK
Port  2354... OK
Port  2355... OK
Port  2356... OK
Port  2357... OK
Port  2358... OK
Port  2359... OK
Port  2360... OK
Port  2361... OK
Port  2362... OK
Port  2363... OK
Port  2364... OK
Port  2365... OK
Port  2366... OK
Port  2367... OK
Port  2368... OK
Port  2369... OK
Port  2370... OK
Port  2371... OK
Port  2372... OK
Port  2373... OK
Port  2374... OK
Port  2375... OK
Port  2376... OK
Port  2377... OK
Port  2378... OK
Port  2379... OK
Port  2380... OK
Port  2381... OK
Port  2382... OK
Port  2383... OK
Port  2384... OK
Port  2385... OK
Port  2386... OK
Port  2387... OK
Port  2388... OK
Port  2389... OK
Port  2390... OK
Port  2391... OK
Port  2392... OK
Port  2393... OK
Port  2394... OK
Port  2395... OK
Port  2396... OK
Port  2397... OK
Port  2398... OK
Port  2399... OK
Port  2400... OK

Testing complete.

No errors found.

Press any key to exit...

Yet...

160918 14:01:45  ERROR creating FS2004 and FSX session. DirectX is reporting an error because UDP port 6073 is already in use. This can often be fixed by disabling your firewall or reconfiguring it to allow this port to be used by FSHost. McAfee's PrivacyService can also cause this problem. Some users have also reported that disconnecting their router from the internet before starting FSHost can fix the problem.
160918 14:01:47  FS2002 server stopped

Active Connections

  Proto  Local Address          Foreign Address        State
  UDP    0.0.0.0:500            *:*
  UDP    0.0.0.0:3702           *:*
  UDP    0.0.0.0:3702           *:*
  UDP    0.0.0.0:3702           *:*
  UDP    0.0.0.0:3702           *:*
  UDP    0.0.0.0:4500           *:*
  UDP    0.0.0.0:5355           *:*
  UDP    0.0.0.0:47624          *:*
  UDP    0.0.0.0:56659          *:*
  UDP    0.0.0.0:56661          *:*
  UDP    0.0.0.0:57721          *:*
  UDP    0.0.0.0:57722          *:*
  UDP    0.0.0.0:57723          *:*
  UDP    0.0.0.0:64550          *:*
  UDP    10.10.10.100:137       *:*
  UDP    10.10.10.100:138       *:*
  UDP    10.10.10.100:1900      *:*
  UDP    10.10.10.100:5353      *:*
  UDP    10.10.10.100:22080     *:*
  UDP    10.10.10.100:45179     *:*
  UDP    10.10.10.100:55750     *:*
  UDP    127.0.0.1:1900         *:*
  UDP    127.0.0.1:48200        *:*
  UDP    127.0.0.1:48201        *:*
  UDP    127.0.0.1:48202        *:*
  UDP    127.0.0.1:55745        *:*
  UDP    127.0.0.1:55746        *:*
  UDP    127.0.0.1:55747        *:*
  UDP    127.0.0.1:55748        *:*
  UDP    127.0.0.1:55751        *:*
  UDP    127.0.0.1:56278        *:*
  UDP    127.0.0.1:56279        *:*
  UDP    127.0.0.1:56280        *:*
  UDP    127.0.0.1:56281        *:*
  UDP    127.0.0.1:56282        *:*
  UDP    127.0.0.1:56283        *:*
  UDP    127.0.0.1:56284        *:*
  UDP    127.0.0.1:56285        *:*
  UDP    127.0.0.1:56286        *:*
  UDP    127.0.0.1:56287        *:*
  UDP    127.0.0.1:60455        *:*
  UDP    127.0.0.1:65000        *:*
  UDP    127.0.0.1:65508        *:*

Everything was working great up until about 6 months ago when something changed and I was no longer able to launch the service. My firewall has all the same ports both at the perimeter AND on the local server (Norton 360), and the netstat above shows nothing conflicting with 6073, so I'm leaning more towards a service problem (maybe Direct Play is fubared or something?).

I can connect fine to other FSHost servers and see all players, so the client is working fine, I just can't host. =(
Any ideas?