Windows Modules Installer Worker High CPU Fix [2026]

Quick Answer: TiWorker.exe high CPU during Windows Update. Wait for completion or run update troubleshooter.

Fix

TiWorker runs during updates - may take 30+ minutes

Settings → Troubleshoot → Windows Update → Run

Stop-Service wuauserv
Remove-Item C:\Windows\SoftwareDistribution\Download\* -Recurse
Start-Service wuauserv

Download updates manually from Microsoft Update Catalog

Againly can inspect the relevant local evidence and propose a fix plan for review.

[CTA: Try free diagnosis]

Evidence-led support

Againly checks the local evidence and shows you a proposed plan before making changes.

Diagnosis-first coverage: executable changes are offered only when this PC's evidence and available capabilities support them.

Works on Windows 10 & 11 · No credit card required