A file required for the update is being used by another process.
Appears when a security check or other installation is running at the same time.
Check whether another installation, backup or scan is in progress.
If it is checked and resolved from above, you do not need to proceed to the next step.
Appears when a security check or other installation is running at the same time.
Difficulty Easy · Estimated time 5 minutes
Check points: Record the error code, when it occurred, and any recent changes.
A file required for the update is being used by another process.
Difficulty Moderate · Estimated time 10~30 minutes
Check points: Quit other tasks and check if the same KB is installed.
If “computer slows down” repeatedly, it is better to narrow it down to excessive background processes and insufficient storage space rather than changing several settings at once. First look for CPU, memory, and disk bottlenecks in Task Manager and check startup programs, storage space, and temperature.
Among boot problems, the “powers on but does not boot” symptom may be related to boot file corruption or storage device issues. Distinguish between the POST stage and the Windows startup stage, then check in that order: external device, boot settings, and recovery environment.
Content review date: 2026-10-07