restart loop Archives

Winsage

May 26, 2026

Microsoft: Domain Controller lookup may fail on Windows Server 2016

Microsoft has acknowledged an issue affecting Windows Server 2016 systems related to domain controller lookups after the installation of the KB5087537 security update released in May 2026. The problem occurs specifically for devices with hostnames that are exactly 15 characters long, causing domain controller discovery to fail and resulting in an ERRORINVALIDPARAMETER during DCLocator calls. This issue may disrupt administrative operations that depend on domain controller lookups, such as DFS Namespace management. Microsoft is investigating the issue but has not provided a timeline for resolution.

Winsage

April 21, 2026

Microsoft releases Windows Server update fix to fix its April update fixes

Microsoft has released an out-of-band update to fix a restart loop issue affecting certain Windows Server devices after the April 2026 update. The problem arose after installing the April 2026 Windows security update (KB5082063), causing domain controllers in multi-domain environments using Privileged Access Management (PAM) to experience LSASS crashes during startup, leading to repeated restarts and potential domain outages. The update targets Windows Server versions 2016 through 2025 and includes hotpatches for failed installations. Only Windows Servers were affected, while some enterprise devices may need to enter their BitLocker recovery key after the first restart post-installation. Microsoft has issued similar updates recently, raising concerns about the frequency of these occurrences.

Winsage

April 20, 2026

Microsoft releases emergency updates to fix Windows Server issues

Microsoft has confirmed that some administrators are experiencing difficulties installing the KB5082063 security update on Windows Server 2025. This month's Patch Tuesday updates have caused certain Windows servers, especially those with domain controller roles, to enter a restart loop due to failures in the Local Security Authority Subsystem Service (LSASS). Microsoft has released emergency out-of-band updates, including KB5091157 for Windows Server 2025, to address both the installation failure and the restart issues. Additionally, some Windows Server 2025 devices may boot into BitLocker recovery mode after installing the KB5082063 update. A bug affecting Windows Server 2019 and Windows Server 2022 that caused unexpected upgrades to Windows Server 2025 has also been resolved. Microsoft has issued various emergency updates throughout the year to address other issues, including a Bluetooth device visibility bug and vulnerabilities in the Routing and Remote Access Service (RRAS).

Winsage

February 17, 2026

Microsoft Windows 11 KB5077181 Update Triggers Infinite Restart Loop on Some Devices

Microsoft's Patch Tuesday update, KB5077181, released on February 10, 2026, has caused significant boot failures for users of Windows 11 versions 24H2 (OS build 26200.7840) and 25H2 (OS build 26100.7840), resulting in endless restart loops. Users are reporting over 15 reboot cycles, preventing access to their desktops. Issues include System Event Notification Service (SENS) errors and DHCP problems affecting internet connectivity. Installation errors with codes 0x800f0983 and 0x800f0991 indicate potential hardware, driver, or servicing stack incompatibilities. The update was intended to address 58 vulnerabilities, including six zero-days, but the boot loop issue has overshadowed these enhancements. CVE IDs and their CVSS scores related to the vulnerabilities addressed include: - CVE-2026-21510: 7.5 - CVE-2026-21519: 7.8 - CVE-2026-21533: 8.8 - CVE-2026-20841: 7.1 As of February 15, 2026, there is no "known issues" entry in Microsoft's release notes despite user reports. Users can uninstall the update through the Control Panel if their systems are accessible, or use the Windows Recovery Environment to execute commands for uninstallation if their systems are unbootable.

Winsage

June 26, 2025

Microsoft rolls out Windows security changes to prevent another CrowdStrike meltdown

Last summer's CrowdStrike incident caused significant disruptions in healthcare, banking, and air travel, resulting in billions of dollars in damages. In response, Microsoft held a security summit with experts from CrowdStrike and other firms to address vulnerabilities. Microsoft announced Safe Deployment practices and architectural changes to enhance Windows security, including relocating third-party security drivers from the Windows kernel to user space. This change aims to reduce risks associated with kernel-level flaws. Upcoming features in Windows 11 24H2 include a streamlined crash report process, replacing the Blue Screen of Death with an "unexpected restart" screen, and a quick machine recovery (QMR) capability to automate fixes during outages. Additionally, Windows Autopatch will allow network administrators to deploy updates with fewer required restarts for Windows 11 Enterprise PCs, limiting them to once every three months.

Winsage

April 18, 2025

Windows 11 24H2 Update Bug Triggers BSOD Error

Microsoft has acknowledged a significant bug in its Windows 11 24H2 updates, causing Blue Screen of Death (BSOD) crashes with the error code “SECUREKERNELERROR” (0x18B). This issue has escalated since the April 2025 Patch Tuesday update, affecting thousands of users globally. The bug leads to system crashes after installing the updates, resulting in persistent crash-restart loops or unbootable systems. Initially reported in March 2025, the problem gained traction following the April update, prompting Microsoft to confirm the bug and investigate its cause. Other issues include failures with Windows Hello and compatibility problems with games and software, particularly on ARM-based devices. To address the crisis, Microsoft has implemented a Known Issue Rollback (KIR) to disable the problematic code, which is being automatically pushed to affected devices, although users may experience a delay of up to 24 hours. Users are advised to keep their devices connected to the internet and restart their PCs multiple times to expedite the fix. For enterprise environments, IT administrators must manually deploy a specific Group Policy update. Microsoft is working on a permanent solution, expected in a future update, while also acknowledging related issues and committing to further fixes in the upcoming May 2025 update.

Winsage

August 4, 2024

How To Fix DPC Watchdog Violation Error In Windows – SlashGear

The DPC Watchdog Violation error is part of Windows's error-checking mechanism that triggers a Blue Screen of Death (BSOD) when a Deferred Procedure Call (DPC) or another process lags beyond its usual execution time. Factors contributing to this error include incompatibility with SSDs or external peripherals, corrupt or missing drivers, corrupted or deleted essential system files, and software conflicts. Troubleshooting steps include disconnecting external devices, checking internal connections, ensuring Windows is updated, booting in Safe Mode, updating the SATA AHCI driver, scanning for corrupted system files using DISM and SFC commands, and restoring the system to a previous point if necessary.

Winsage

July 19, 2024

Microsoft Outage: Microsoft Windows reports major service outage globally: Users share this ‘error message’ screenshot | – Times of India

Microsoft is investigating an issue impacting users' ability to access various Microsoft 365 apps and services. Some users are experiencing blue screen errors on their Windows laptops after installing a Crowdstrike update.

Winsage

July 14, 2024

Microsoft Acknowledges Bug in Windows 11 June Optional Update

Microsoft has noted a bug in the KB5039302 update for Windows 11 and is working to limit its effects. They are using the Known Issue Rollback feature to fix the problem without requiring users to take extra steps. However, in some cases, IT teams may need to use special group rules to fully solve the issue.

Winsage

June 29, 2024

Microsoft Windows Deadline—You Must Update Your PC By July 4

Some Windows 11 users are facing a restart loop issue after installing the June update KB5039302. This issue mainly affects enterprise machines running virtual machines tools and nested virtualization features, so home users are less likely to be impacted. The update is not mandatory and not a security update, so users should proceed with updating as usual. Windows 10 end-of-life is approaching on October 14, 2025, and users are urged to upgrade to Windows 11 to continue receiving security updates and technical support.