logo
search
Microsoft 365 Error Codes

How to Fix Office Error 0xc0000142 After a Microsoft 365 Update

Maira MehtabMaira Mehtab Sep 22, 2026 868 views

Question details

The user is unable to open Microsoft 365 applications following a software update, as the programs fail to launch and return a specific error code.

Product
Microsoft 365
Device & OS
not provided
Scenario
Attempting to launch Microsoft 365 applications after completing a lengthy software update.
Observed behavior
The applications fail to open, displaying error code 0xc0000142. Restarting the computer does not resolve the issue.
Before you start

Ensure you have an active internet connection if an Online Repair is required, and close any background Office processes using Task Manager.

Solution 1Recommended

Run the Microsoft Office Repair Tool

Use the built-in Windows application repair tool to fix corrupted Microsoft 365 installation files causing error 0xc0000142.

1
Open Installed Apps

Navigate to your system Settings, select Apps, and then click on Installed apps (or Programs and Features in Control Panel).

2
Modify the Office Installation

Scroll down to locate your Microsoft 365 or Office installation. Click the three dots next to it (or right-click) and select Modify.

3
Run Quick Repair

Select the Quick Repair option and click Repair. Follow the on-screen prompts to complete the process. This will scan and replace corrupted files without needing an internet connection.

4
Run Online Repair (if needed)

If Quick Repair does not fix error 0xc0000142, repeat the steps above and choose Online Repair. This requires an internet connection and will perform a more comprehensive fix.

Online Repair Duration: Online Repair takes longer than Quick Repair as it downloads replacement files directly from Microsoft servers.
Free Microsoft Office alternative

Use WPS Office as a Reliable Alternative When Microsoft 365 Fails

If Microsoft 365 error 0xc0000142 prevents you from accessing your work, WPS Office offers a free, lightweight, and highly compatible alternative that avoids complex update errors and works seamlessly with your existing documents.

  1. 1. Download WPS Office: Visit the official WPS Office website to download the free, lightweight installer.
  2. 2. Install the Software: Run the downloaded file and follow the quick setup instructions to install WPS Office on your computer.
  3. 3. Open Your Files: Launch WPS Office and open your existing Word, Excel, or PowerPoint files directly without losing any formatting.
Fully compatible with Microsoft Office file formats like .docx, .xlsx, and .pptx.Lightweight installation that completely avoids update errors like 0xc0000142.Familiar and intuitive user interface for a seamless transition.Free to use with built-in, advanced PDF editing tools.
microsoft office alternative - wps office

Frequently Asked Questions

What causes Microsoft 365 error code 0xc0000142?

Error 0xc0000142 typically occurs when a Microsoft 365 application fails to initialize properly. This is often caused by corrupted installation files, conflicting third-party software, or incomplete software updates.

Will running the Office repair tool delete my files or documents?

No, running either the Quick Repair or Online Repair tool will only scan and replace Microsoft 365 application files. Your personal documents, spreadsheets, and presentations will not be deleted or modified.

What should I do if Online Repair doesn't fix error 0xc0000142?

If Online Repair fails to resolve the issue, you may need to completely uninstall Microsoft 365 using the official Microsoft Support and Recovery Assistant, and then perform a fresh installation from your Microsoft account dashboard.