Microsoft rushed out an emergency update to fix bugs from its January 2026 security patch. The patch addresses two major issues: some Windows 11 devices using Secure Launch could only restart when users tried to shut down or hibernate. It also restores remote login capability for Windows 10 and Windows 11 users after credential prompt failures blocked access.

These glitches show the ongoing challenges of rolling out major security updates across millions of devices. The Secure Launch feature, designed to protect against firmware attacks during startup, was specifically implicated in the shutdown problem. For businesses and remote workers, the inability to log in remotely created significant disruption until the fix arrived.

While this emergency patch resolves the core shutdown and login failures, some users still report lingering issues like blank screens or Outlook crashes. This follows another emergency fix Microsoft issued last October for Windows Recovery Environment problems. For those avoiding the Windows 11 upgrade, Microsoft offers Extended Security Updates for Windows 10 to buy more time.