Windows 11 24H2/25H2 System Freeze After January 2026 Updates – Lenovo ThinkPad G2

Dear Microsoft Support Team,

We would like to raise a high-priority technical support case regarding a stability issue observed after installing the January 2026 cumulative updates on our Windows 11 devices.

Environment Details:

• Device Model: Lenovo ThinkPad G2 (multiple units)
• OS Versions: Windows 11 24H2 and 25H2
• Update Installed: January 2026 Patch Tuesday cumulative update (KB number can be provided)
• Deployment Method: WSUS / Intune / Windows Update (specify accordingly)
• BIOS Version: (Installed Latest available from Lenovo)

Issue Description: After installing the January 2026 cumulative updates, devices intermittently experience a complete system freeze. The system becomes fully unresponsive:

• Mouse and keyboard input stop responding
• No BSOD is displayed
• Task Manager cannot be opened
• System recovery is only possible via hard reboot (power button)

Frequency: The issue occurs randomly, both during active use and idle state. Multiple users across our environment are impacted.

Troubleshooting Performed:

• Reinstalled OEM-certified Lenovo display drivers
• Disabled Fast Startup
• Ran SFC and DISM health checks (no integrity violations)
• Updated BIOS to latest version
• Setting power idle mode, then work normally

Request:

- Please confirm whether this is a known global issue under investigation.

- Advise if any hotfix, Known Issue Rollback (KIR), or registry-based mitigation is available.

- Provide guidance on additional diagnostic logging required at kernel or driver level.

- Confirm whether crash dump analysis is recommended for this scenario.

We are prepared to provide additional diagnostic logs, memory dumps, or reproduction steps upon request.

Kindly treat this as a priority case due to multi-user impact in a production environment.

Thank you for your support.

#Windows11, #Windows 11 24H2,

Windows Update, Cumulative Update, System Freeze, Lenovo ThinkPad, Display Driver, Enterprise