I’ve got the same problem. Tried the rename the .exe file thing. It worked, i can actually play. BUT, this is definately not a normal software install.
The game is not on the Installed Software list in Windows, it does not work with NVidia GeForce Experience software (it simply does not detect the game installed and cannot optimize video settings for it). Game settings randomly reset after game restart.
I was soooo excited about coming back to GW2 after another disappointment in Blizzard but it seems like the game is not optimized yet ((
EDIT: on top of that, so much cases and no answer from tech support seems kinda frustrating =(