policy update

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.