Windows 10 Start menu and Alt+Tab slow after screen sharing

An investigation into Windows 10 reveals that window sharing via Chromium-based browsers leaks about 20 listeners per second inside explorer.exe, causing severe lag in the Start menu and Alt+Tab over time. Microsoft fixed the bug in Windows 11 but did not backport it to Windows 10, leaving affected users to rely on workarounds like sharing entire screens, using alternative browsers, or restarting the explorer.exe process. Open article →