I think they finally got it right in the new Windows update.
Previous updates always screwed up my networking when I tried to access drives from other machines. It always asked for network credentials. Turn off password protection sharing never worked. After this update I thought it was broken again. This time the update had Turn on password protection sharing checked by default. After unchecking I can now access other systems drives.
Sonar Platinum, W7 Pro 32GB Ram, Intel i7 4790, AsRock Z97 Pro 4, NVidia 750ti, AP2496
Sonar Platinum, W7 Pro, 16GB Ram, AMD FX 6300, Gigabyte GA 970 -UD3 P, nVidia 9800GT, Guitar Port, Terratec EWX 2496