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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...
I have an ACER model Aspire A515-52G, same issues, what I did to resolve the issues so far, deinstalled KB5054156, then KB5066128, and at last KB5077181. Stopped any automatic windows updates for 4 weeks. My system showed simular issues like the ones you have reported. Taskmanager wasn't working anymore, mouse keyboard freezing, CPU at 100 % . Couldn't shutdown my system anymore or even do a restart. I had to hard reboot every time. My device also has the new certificate db:
PS C:\WINDOWS\system32> [System.Text.Encoding]::ASCII.GetString((Get-SecureBootUEFI db).bytes) -match 'Windows UEFI CA 2023'
True
Only deinstalling the mentioned Windows Updates helped to stabilize my system again. PLEASE FIX THIS with PRIORITY!