Similar questions are here and here
My case is I\'m using Qt 5.5 with Qt creator 3.5 on a Windows 10 machine. It takes about 10 to 15 seconds to start debugging my p
for CDB Debugger Go to:
Tools >> Options >> Debugger >> CDB Paths
check Symbol Paths and remove server path (http://msdl.microsoft.com/download/symbols)