Microsoft Edge High CPU Usage on Windows 11? 8 Ways to Fix It (2026)

Microsoft Edge, the default browser on Windows 11, is designed to deliver a fast and efficient web browsing experience. However, sometimes you may notice Microsoft Edge using unusually high CPU, causing your computer to slow down, overheat, drain the battery faster, or make the cooling fans run constantly. This issue is mostly caused by resource-intensive websites, too many open tabs, faulty browser extensions, background processes, corrupted browsing data, or hardware acceleration issues. In some cases, a corrupted browser installation or malware infection can also cause excessive CPU usage on Windows 11. Whatever the reason, in this guide, you’ll learn the most effective ways to reduce Microsoft Edge CPU usage on Windows 11 and restore smooth, efficient browser performance.

Why Is Microsoft Edge Using High CPU on Windows 11?

In most cases, the problem isn’t with your processor itself but with something running inside the browser or a Windows component interacting with it.

• Too many open tabs: Every tab runs as a separate process. Having dozens of tabs open, especially those with videos or interactive content, can significantly increase CPU usage.
• Resource-intensive websites: Modern websites often use complex JavaScript, animations, advertisements, or background scripts that require more processing power.
• Problematic browser extensions: An outdated, poorly coded, or conflicting extension can continuously use CPU resources, even when you’re not actively using it.
• Hardware acceleration issues: While hardware acceleration is designed to improve performance, it can sometimes cause high CPU usage due to graphics driver compatibility problems.
• Corrupted browser cache or profile data: Damaged cache files or user profile data may prevent Edge from working efficiently, causing unnecessary CPU activity.
• Background apps and browser processes: Features such as Startup Boost, background extensions, and Microsoft Edge running after you close the browser can increase processor usage.
• Outdated Microsoft Edge or Windows 11: Software bugs can occasionally cause abnormal CPU usage, and installing the latest updates often resolves known performance issues.
• Malware or unwanted software: Some malicious programs inject scripts into browsers or run hidden processes that cause Microsoft Edge to consume unusually high CPU resources.

Before You start

Before making any changes to Microsoft Edge or Windows 11, try these quick checks. They often resolve temporary CPU spikes without apply any advanced troubleshooting.

• Restart Microsoft Edge to close stuck browser processes and reload all tabs.
• Restart your Windows 11 PC to clear temporary system glitches and free up processor resources.
• Close unnecessary tabs that contain videos, online games, or other resource-intensive content.
• Open Windows Task Manager (Ctrl + Shift + Esc) and confirm that Microsoft Edge is the process using high CPU, not another application running in the background.
• Install the latest Windows 11 and Microsoft Edge updates, as performance bugs are frequently fixed through updates.

If Microsoft Edge still uses an unusually high amount of CPU after these basic checks, follow the solutions below in order.

1. Identify High CPU Tabs Using Edge Browser Task Manager

Before changing any settings, it’s worth checking which tab, extension, or browser process is actually causing the high CPU usage. Microsoft Edge includes a built-in Browser Task Manager that shows the CPU and memory usage of every open tab, extension, and process. This makes it easy to identify the source of the problem instead of guessing.

To check CPU usage in Edge:

1. Open Microsoft Edge.
2. Click the three-dot menu and select More tools > Browser task manager.
   • Alternatively, press Shift + Esc while Edge is open.
3. Click the CPU column to sort processes by CPU usage.
4. Identify any tab, extension, or process using an unusually high amount of CPU.
5. Select the process and click End process if it’s no longer needed.

If a particular website or extension repeatedly causes high CPU usage, avoid using it or disable the extension until an update is available. If CPU usage remains high across all tabs, continue with the next solution.

2. Close Resource-Intensive Tabs

Every tab you open in Microsoft Edge uses CPU resources. Websites that stream videos, run online games, play animations, or use complex web applications can significantly increase CPU usage. If you keep multiple tabs open, the combined workload can make Edge consume even more processing power.

Close any tabs you’re no longer using to reduce the browser’s workload. You can also enable Sleeping Tabs, which automatically puts inactive tabs to sleep, reducing CPU and memory usage without closing them.

To enable Sleeping Tabs:

1. Open Microsoft Edge.
2. Click the three-dot menu and select Settings.
3. Go to System and Performance -> Performance
4. Turn on Save resources with sleeping tabs.
5. Choose how long inactive tabs should remain open before they go to sleep.

After reducing the number of active tabs, check whether Microsoft Edge’s CPU usage has improved.

3. Disable Unnecessary Browser Extensions

Browser extensions add useful features to Microsoft Edge, but they also run in the background and consume CPU resources. Poorly optimized, outdated, or incompatible extensions can cause Edge to use unusually high CPU usage, especially when browsing resource-intensive websites.

Disable extensions you don’t use regularly and check whether CPU usage improves. If you’re unsure which extension is responsible, disable them one at a time until you find the culprit.

To disable extensions in Microsoft Edge:

1. Open Microsoft Edge.
2. Click the three-dot menu and select Extensions > Manage extensions.
3. Turn off extensions you don’t need or click Remove to uninstall them.
4. Restart Microsoft Edge and monitor CPU usage.

If Edge continues to use excessive CPU after disabling extensions, move on to the next solution.

4. Clear Microsoft Edge Cache and Cookies

Microsoft Edge stores cached files and cookies to speed up website loading. However, over time this data can become outdated or corrupted, causing browser processes to work harder than necessary and increasing CPU usage. Clearing the browser cache removes temporary files and allows Edge to create fresh browsing data.

To clear the cache and cookies:

1. Open Microsoft Edge.
2. Click the three-dot menu and select Settings.
3. Go to Privacy, search, and services.
4. Under Clear browsing data, click Choose what to clear.
5. Set the Time range to All time.
6. Select Cached images and files and Cookies and other site data.
7. Click Clear now, then restart Microsoft Edge.

Note: Clearing cookies will sign you out of most websites, but it won’t delete your bookmarks, saved passwords, or favorites.

5. Disable Startup Boost and Background Apps

Microsoft Edge includes Startup Boost to help the browser launch faster and an option to keep extensions and apps running in the background even after you close the browser. While these features improve convenience, they can also cause Edge to continue using CPU resources when you’re not actively browsing.

If you notice Microsoft Edge using CPU even after closing the browser, disabling these background features may help.

To disable Startup Boost and background apps:

• Open Microsoft Edge.
• Click the three-dot menu and select Settings.
• Go to System and Performance.
• Turn Off Startup Boost.

• Turn Off Continue running background extensions and apps when Microsoft Edge is closed.
• Restart your computer and check CPU usage again.

6. Check Hardware Acceleration Settings

Hardware acceleration allows Microsoft Edge to offload graphics-related tasks to your computer’s GPU instead of relying entirely on the CPU. In most cases, this improves performance. However, outdated graphics drivers or compatibility issues can sometimes cause Edge to use more CPU than expected.

If you suspect hardware acceleration is contributing to high CPU usage, try changing the setting and compare the results.

To adjust hardware acceleration:

1. Open Microsoft Edge.
2. Click the three-dot menu and select Settings.
3. Go to System and Performance.
4. Find Use graphics acceleration when available.
5. If it’s enabled, turn it off and restart Edge. If it’s already disabled, turn it On instead.
6. Use Edge for a few minutes and monitor CPU usage.

If changing the hardware acceleration setting doesn’t reduce CPU usage, proceed to the next solution.

7. Repair Microsoft Edge

If Microsoft Edge continues to use excessive CPU after trying the previous solutions, its installation may be corrupted. Windows includes a built-in repair option that reinstalls Edge without removing your bookmarks, passwords, browsing history, or other personal data. Repairing the browser can resolve issues caused by damaged or missing program files.

To repair Microsoft Edge:

• Press Windows + I to open Settings.
• Go to Apps > Installed apps.
• Locate Microsoft Edge, click the three-dot menu, and select Modify.

• Click Repair and wait while Windows downloads and reinstalls the latest version of Edge.
• Restart your computer after the repair is complete.

Once Edge has been repaired, check whether CPU usage has returned to normal. If the issue still persists, try the final solution below.

8. Scan for Malware and Unwanted Software

Malware, browser hijackers, and potentially unwanted programs (PUPs) can run hidden processes or inject scripts into your browser, causing Microsoft Edge to consume excessive CPU resources. Although this isn’t one of the most common causes, it’s worth checking if none of the previous solutions have resolved the problem.

To scan your PC with Windows Security:

1. Press Windows + I to open Settings.
2. Go to Privacy & security > Windows Security.
3. Click Virus & threat protection.
4. Select Quick scan. If the problem persists, run a Full scan for a more thorough check.
5. Remove any detected threats and restart your computer.

If Microsoft Edge continues to show unusually high CPU usage after a clean malware scan, the issue may be caused by a specific website, a faulty user profile, or another application running in the background. In that case, test Edge with a new browser profile or in a Clean Boot environment to identify the source of the problem.

Still experiencing high CPU usage? If Microsoft Edge isn’t the only application using excessive CPU, or your entire Windows 11 PC feels slow and unstable, the issue may be caused by corrupted Windows system files. In that case, run the DISM and SFC tools to repair your Windows installation before troubleshooting Edge further.

Frequently Asked Questions (FAQ)