Microsoft Releases Emergency Fix for Azure Virtual Desktop, Windows 365 Authentication Failures

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Microsoft Issues Emergency Fix for Azure Virtual Desktop Authentication Issues Microsoft released an out-of-band update to address credential authentication failures impacting Azure Virtual Desktop and Windows 365 connections. These issues arose following the January 2026 security update and are linked to a zero-day vulnerability tracked as CVE-2026-20805, which is an information disclosure flaw in the Desktop Window Manager. 2 sources 31