Windows Error 0xc000021a1 How to Fix Windows 10 Update Error Code 0xc000021a (1 min solution) If booting is repeated due to infinite loading that occurs after Windows 10 update, a blue screen appears after a system check, or error code 0xc000021a occurs without changing to safe mode, the solutions are as follows. Step 1 : Check System Integrity and Run Dism Tool 1. Hold down the Windows key on your keyboard and press the X key. Then select WindowsPowershell from the menu. 2. Enter the fo.. 2022. 1. 6. 이전 1 다음