Just found out this the hard way, glad I found it soon which prevented me from doing like Ondrej Kelle – Google+ – Wasted a few hours with this….:
Debugging 64 bit Delphi applications with Delphi XE2 on Windows 8 does not work
Problem: Debugging a 64 bit Delphi application using Delphi XE2 with Windows 8 results in the error Disconnected session.
Solution: Windows 8 is not a supported platform for versions of Delphi prior to Delphi XE3. To get debugger support for 64 bit applications on Windows 8, you must get Delphi XE3. If you are upgrade sensitive, Embarcadero recommends you get Support and Maintenance along with your next purchase. Support and Maintenance guarantees you all updates for 1 year and gets you 3 support incidents in addition.
Anybody with a real workaround (apart from downgrading to Windows 7)?