Microsoft Issues Emergency Fix for Azure Virtual Desktop Authentication Issues

First seen 22 Jan 2026, 02:59 UTC • Redmondmag

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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.

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Microsoft Issues Emergency Fix for Azure Virtual Desktop Authentication Issues

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