No sound preview. Fix: Windows 11 exclusive mode for audio devices blocks the portable app. Go to Sound Settings > More Sound Settings > Speakers > Advanced > Uncheck "Allow applications to take exclusive control."
Understanding AAct Portable for Windows 11: Features, Risks, and Alternatives aact portable for windows 11 exclusive
: It primarily uses KMS (Key Management Service) emulation to trick the operating system into thinking it is part of a corporate volume-license network. No sound preview