Apps That Break on Resume from Sleep — How Windows Power Events Work and How to Build Business Apps That Survive Them (archived 2026-08-30)

Abstract

You opened the laptop and the business app's connections were dead — the cause is a design that never accounted for sleep. This article covers the WM_POWERBROADCAST notification flow, Modern Standby behaviour, disconnect/reconnect design, sleep suppression, and investigation commands, all from primary sources. Archived version of https://comcomponent.com/en/blog/windows-sleep-resume-power-events/, as published on 2026-08-30. The live article is maintained and may change after this date. First published 2026-08-22.