authentication issues Archives

Winsage

April 23, 2025

Microsoft fixes Windows Server 2025 blue screen, install issues

Microsoft has addressed issues affecting Windows Server 2025 for systems with more than 256 logical processors, which could lead to installation failures, slow start-up times, and blue screen errors. These problems have been resolved through updates since the KB5046617 cumulative update released in November. IT administrators are advised to install the latest security updates, which include essential fixes. A temporary workaround involves limiting the number of logical processors to 256 or fewer by adjusting settings in the UEFI Setup. Additionally, Microsoft warned of potential accessibility issues with Windows Server 2025 domain controllers post-restart and reported login difficulties with Windows Hello after the April 2025 updates. A bug causing authentication issues with Credential Guard has been fixed, and a new safeguard hold for Windows 11 24H2 has been introduced due to compatibility problems with the SenseShield Technology's sprotect.sys driver.

Winsage

April 17, 2025

New Windows Server emergency updates fix container launch issue

Microsoft released emergency updates for Windows Server to address startup failures in containers operating under Hyper-V isolation mode, caused by compatibility issues with the 2025.04 B container images. The updates enhance access to essential system files from the Windows Server host, improving compatibility and reliability. These out-of-band updates for Windows Server 2019, 2022, and 2025 must be manually downloaded from the Microsoft Update Catalog, as they will not be delivered through Windows Update. This update follows previous challenges, including authentication issues and boot problems caused by earlier security updates for Windows Server 2019 and 2022.

Winsage

April 14, 2025

Microsoft: Windows Server 2025 restarts break connectivity on some DCs

Microsoft has warned IT administrators about a potential issue with Windows Server 2025 domain controllers (DCs) becoming inaccessible after a restart, due to defaulting to the standard firewall profile instead of domain-specific settings. This mismanagement can lead to DCs being unreachable on the domain network or improperly accessible through restricted ports and protocols. A workaround involves manually restarting the network adapter on affected servers after each reboot, and Microsoft recommends setting up a scheduled task for this. The company is working on a permanent solution for a future update. Additionally, Microsoft has alerted users to another issue with Windows Hello logins related to the KB5055523 April 2025 security update and has implemented a fix for authentication issues with Credential Guard and the Kerberos PKINIT pre-auth security protocol.

Winsage

April 9, 2025

Microsoft: April 2025 updates break Windows Hello on some PCs

Microsoft has announced that a subset of Windows users may have difficulties logging into their accounts via Windows Hello after installing the April 2025 security updates, specifically affecting Windows 11 24H2 and Windows Server 2025 with the KB5055523 update. The issue occurs on devices with Dynamic Root of Trust for Measurement (DRTM) or System Guard Secure Launch features enabled prior to the update. Users may see messages indicating problems with their PIN or facial recognition setup. Microsoft has provided workarounds for affected users, including re-enrollment in Windows Hello for both PIN and facial recognition. Additionally, Microsoft resolved another bug related to KB5055523 affecting Credential Guard and introduced a safeguard hold for Windows 11 24H2 systems using SenseShield Technology's sprotect.sys driver due to compatibility issues. Upgrade blocks have also been implemented for devices with incompatible software or hardware, including Dirac audio improvement software and certain applications.