Microsoft: Windows updates make password login option invisible

Windows 11 updates released since August 2025 (notably KB5064081 and subsequent updates) can cause the password sign-in icon to not appear on the lock screen for systems with multiple sign-in options, though hovering reveals an invisible password button and signing in still works; Microsoft acknowledged the bug, has no full workaround, and is working on a fix. The article also recounts other non-security problems tied to the same updates—DRM playback issues, app installation/UAC problems, streaming lag, WSUS update failures, and emergency fixes for reset/recovery—framed as quality/compatibility issues rather than active security threats.