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Office Performance Issues

How to Fix High CPU Usage from Microsoft Office Click-to-Run

Natalie TaylorNatalie Taylor Oct 8, 2026 873 views

Question details

The user is experiencing significant system slowdowns because Microsoft Office Click-to-Run processes are automatically starting up and consuming high CPU resources.

How to Fix High CPU Usage from Microsoft Office Click-to-Run
Product
Microsoft Office
Device & OS
Windows
Scenario
System boot-up or running Office applications in the background.
Observed behavior
Multiple Click-to-Run background processes launch during Windows startup, taking up a large percentage of CPU processing power and reducing overall computer performance.
Before you start

Save all your ongoing work and ensure you are logged into your Windows PC with an administrator account, as modifying system services requires administrative privileges.

Solution 1Recommended

Temporarily Restart or Disable the Click-to-Run Service

Restarting the service can clear temporary stuck update loops causing high CPU usage. If troubleshooting requires it, you can disable the service temporarily.

Office Click-to-Run processes manage software installation, updates, and core Microsoft 365 functionality. Completely disabling them permanently is not recommended as it will interrupt essential Office updates and online features.

1
Open Windows Services

Press the Windows key + R to open the Run dialog box. Type 'services.msc' and press Enter.

2
Locate the Service

Scroll down the list of services until you find 'Microsoft Office Click-to-Run Service'.

3
Restart the Service

Right-click on the service and select 'Restart'. Wait a few moments to see if your CPU usage returns to normal.

4
Disable for Troubleshooting

If the issue persists, right-click the service, select 'Properties', change the 'Startup type' to 'Disabled', and click 'Stop'. Click 'Apply' and 'OK'.

Temporarily Restart or Disable the Click-to-Run Service
Important Reminder: If you stopped or disabled the service for troubleshooting, always remember to restart your computer afterward and re-enable the service to ensure Microsoft Office continues to function and receive updates.
Free Microsoft Office alternative

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  1. 1. Download the Installer: Visit the official WPS Office website and click on the 'Download WPS Office Free' button.
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Frequently Asked Questions

What exactly does the Microsoft Office Click-to-Run process do?

Click-to-Run is a Microsoft technology that handles the installation, updating, and background execution of Microsoft 365 and Office applications. It continuously runs to ensure your software is always up-to-date with the latest security patches and features.

Is it safe to permanently disable the Click-to-Run service?

No, permanently disabling it is not recommended. It will prevent your Office applications from receiving crucial security updates and may break essential features within Microsoft 365. It should only be disabled temporarily for troubleshooting.

Why is Click-to-Run using so much CPU during Windows startup?

It typically consumes high CPU when it is actively downloading and applying software updates in the background. It can also cause high CPU usage if the Office installation has become corrupted and the updater is stuck in a loop.

Does WPS Office use a similar Click-to-Run background service?

No, WPS Office is intentionally designed to be lightweight and does not rely on heavy, constant background updater services like Click-to-Run. This makes it a highly efficient alternative, especially for computers with limited processing power.