Hi,
I upgraded from WAMP 2.5 to 3.0.3 using the wampserver2.5_x64_update_3.0.3.exe download. I ran this as administrator.
All seemed to install fine; I installed it in the same directory as the 2.5 install - not sure whether that was correct or not.
Now when I run Wamp server (as Administrator), the icon very briefly flashes orange, and then reverts back to red. No services are running.
Forum:
WampServer English