Notes about the QDE file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The QDE file type is primarily associated with 'qDos' by Q-Base Team. qDos is an operating system under development. A QDE file is the qDos version of an executable (.EXE) in DOS/Windows.