How to Fix Microsoft Office 2021 Error 0xc0000142 on Windows 11
Question details
The user needs to resolve Office Home and Student 2021 startup failures caused by error 0xc0000142 and an unresponsive Click-to-Run service.
- Product
- Microsoft Office Home and Student 2021
- Device & OS
- Windows 11
- Scenario
- Launching Office applications or attempting to repair/reinstall the software suite.
- Observed behavior
- Applications start slowly or display error 0xc0000142. Repair and reinstall attempts freeze, and the Click-to-Run service fails to start consistently.
Ensure you have a stable internet connection and verify that your Windows 11 system has enough disk space for downloading system updates or an ISO file.
Update Windows 11 and Restart Click-to-Run Service
Installing the latest Windows updates can resolve underlying system conflicts preventing the Office service from running properly.
Windows updates often contain essential bug fixes for system components that Microsoft Office depends on. Ensuring your OS is fully up to date is the safest first step.
Open the Windows Start menu, navigate to Settings > Windows Update, and click 'Check for updates'. Install any pending updates and restart your computer.
Press the Windows key + R to open the Run dialog, type 'services.msc', and press Enter.
Scroll down to find 'Microsoft Office Click-to-Run Service'. Right-click it and select 'Properties'. Set the Startup type to 'Automatic', click 'Start' if the service is stopped, and hit 'Apply'.
Perform an In-Place Windows 11 Upgrade
If standard updates fail, an in-place upgrade repairs corrupted Windows files causing the Office Click-to-Run service to fail, without losing personal data.
Avoid Click-to-Run Errors with WPS Office
Struggling with complex Windows 11 upgrades just to fix Office 2021 Error 0xc0000142? Switch to WPS Office. It installs quickly without relying on fragile Click-to-Run services, offering a robust, lightweight alternative that is fully compatible with Microsoft formats.
- 1. Download the Installer: Visit the official WPS Office website and download the free installation file.
- 2. Install WPS Office: Run the installer. The lightweight package installs in just a few minutes without complex system dependencies.
- 3. Open Your Files: Launch WPS Office and directly open your existing .docx, .xlsx, or .pptx files to continue working immediately.
Frequently Asked Questions
What causes Microsoft Office Error 0xc0000142?
This error typically occurs when the Microsoft Office Click-to-Run service fails to start. This can be caused by corrupted Windows system files, pending OS updates, or conflicting background processes on Windows 11.
Will an in-place Windows 11 upgrade delete my files?
No. If you select the 'Keep personal files and apps' option during the Windows 11 ISO setup, your documents, settings, and third-party applications will remain completely safe.
How do I manually start the Office Click-to-Run service?
Press Win + R, type 'services.msc', and press Enter. Scroll down to find 'Microsoft Office Click-to-Run Service', right-click it, select Properties, change the Startup type to Automatic, and click the Start button.
Can I use a newer Windows 11 ISO if I am on an older version like 21H2?
Yes, using a newer version ISO (like 22H2) on an older system acts as an in-place upgrade. It will simply update your system to the newer version while repairing system files, without causing data loss if you choose to keep your files.
