How to Fix WinGet COM Server High CPU Usage on Windows 11

Package managers make app installation and updates far easier, and Windows Package Manager (winget) is Microsoft’s official solution for doing exactly that. However, some users notice a strange issue where WinGet COM Server suddenly starts using very high CPU, even when no apps are being installed or updated.

If your system fans spin up and Task Manager shows WinGet COM Server consuming excessive CPU on Windows 11, you’re not alone. In most cases, this behavior is caused by stuck background tasks, Store integration issues, corrupted caches, or update loops, not by malware or failing hardware.

In this in-depth guide, we’ll explain why WinGet COM Server causes high CPU usage and walk you through all effective fixes, step by step.

What Is WinGet COM Server and Why Is It Running?

WinGet COM Server is a background component that allows Windows apps and services to interact with WinGet. It is commonly triggered by:

• Microsoft Store app updates
• App Installer service
• Scheduled app update checks
• Background package inventory scans

Normally, it runs briefly and exits. High CPU usage means something is stuck or repeatedly retrying.

Why WinGet COM Server Uses High CPU

The most common causes include:

• Stuck Microsoft Store update checks
• Corrupted WinGet or App Installer cache
• Broken Store app registrations
• Pending or failed package updates
• Windows Update and Store conflicts
• Outdated App Installer or Windows build

The good news is that this issue is almost always fixable with software troubleshooting.

Fix WinGet COM Server High CPU Usage on Windows 11

Follow the solutions below in order. After each step, check Task Manager to see if CPU usage returns to normal.

1. Restart Your PC (Quick Check)

Before changing settings, eliminate temporary glitches.

1. Save all open work.
2. Restart your PC normally.
3. Open Task Manager and monitor CPU usage.

If the spike was caused by a stuck background task, this may fix it immediately.

2. Let Microsoft Store Updates Finish

WinGet often spikes CPU when Store updates are running.

1. Open Microsoft Store.
2. Go to Library.
3. Click Get updates.
4. Wait for all app updates to complete.

If updates were stuck in the background, CPU usage should drop once they finish.

3. Reset Microsoft Store Cache

A corrupted Store cache can trigger endless WinGet activity.

1. Press Windows + R.
2. Type: wsreset
3. Press Enter.
4. Let the Microsoft Store reset and reopen automatically.

This clears Store-related cache without deleting apps.

4. Update App Installer (Very Important)

WinGet depends on the App Installer package.

1. Open Microsoft Store.
2. Search for App Installer.
3. Update it to the latest version.
4. Restart your PC.

Outdated App Installer versions are a major cause of WinGet COM Server CPU spikes.

5. Reset App Installer

If updating doesn’t help, reset it completely.

1. Open Settings → Apps → Installed apps.
2. Find App Installer.
3. Click the three-dot menu → Advanced options.
4. Click Repair.
5. If CPU usage continues, click Reset.

This refreshes WinGet’s backend components.

6. Clear WinGet Cache Manually

Corrupted package metadata can cause repeated scans.

1. Press Windows + R, type: %localappdata%\Packages
2. Locate the folder related to Microsoft.DesktopAppInstaller.
3. Open it and delete the LocalCache folder contents.
4. Restart your PC.

This forces WinGet to rebuild its cache from scratch.

7. Check for Stuck WinGet Processes

Sometimes a WinGet command runs silently in the background.

1. Open Task Manager.
2. Look for:
   • winget.exe
   • AppInstaller processes
3. End those tasks if they are running indefinitely.

CPU usage should drop immediately after stopping stuck processes.

8. Update Windows 11

WinGet issues are frequently fixed through cumulative updates.

1. Open Settings → Windows Update.
2. Install all available updates.
3. Restart your PC.

Running an outdated Windows build increases the chance of Store and WinGet conflicts.

9. Re-register Microsoft Store Apps (Advanced)

If Store integration is broken, re-registering apps can help.

1. Open Windows Terminal (Admin).
2. Run: Get-AppxPackage -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
3. Wait for the process to complete.
4. Restart your PC.

This repairs Store and WinGet dependencies system-wide.

10. Check for Malware (Rare but Important)

Although uncommon, malware can disguise itself as background services.

1. Open Windows Security.
2. Run a Full scan.
3. Remove any detected threats.

If WinGet COM Server is genuine, scans will come back clean.

Wrapping Up

High CPU usage from WinGet COM Server on Windows 11 is usually caused by stuck Microsoft Store updates, corrupted App Installer data, or WinGet cache issues, not by hardware failure or malware. By updating and resetting App Installer, clearing caches, finishing Store updates, and keeping Windows up to date, you can bring CPU usage back to normal in most cases.

Once fixed, WinGet should quietly run in the background only when needed—without draining your CPU or slowing down your system.