Office Apps Not Opening

How to Troubleshoot Microsoft 365 and Word Errors on One Laptop

Steve K Oct 10, 2026 869 views

Question details

The user is trying to resolve an issue where Microsoft 365 or Word works fine on other devices but displays an error or fails to launch on one specific laptop.

How to Fix Microsoft 365 or Word Errors Occurring on a Single Laptop

Product: Microsoft Word / Microsoft 365
Device & OS: Windows
Scenario: Attempting to launch and use Microsoft Word or other Microsoft 365 applications on a specific laptop.
Observed behavior: The application fails to open or throws an error on one laptop, despite the same Microsoft account and software functioning correctly on the user's other devices.

Before you start

Before troubleshooting, ensure your laptop is connected to the internet and verify that your Windows operating system is fully up to date, as pending updates can occasionally block Office applications from launching.

Solution 1Recommended

Launch Word in Safe Mode and Disable Add-ins

Starting Word in Safe Mode bypasses customizations and third-party add-ins, helping you identify if a specific plugin is causing the launch error on this laptop.

Safe Mode is a diagnostic tool that loads Microsoft Word with only the essential files. If the application opens successfully in this mode, the issue is likely caused by a faulty add-in or a corrupted startup template.

Open Word in Safe Mode

Hold down the 'Ctrl' key on your keyboard and double-click the Microsoft Word shortcut. Click 'Yes' when prompted to start in Safe Mode. Alternatively, press 'Win + R', type 'winword.exe /safe' (ensure there is a space before the forward slash), and press Enter.

Access Add-in Settings

Once Word opens in Safe Mode, navigate to 'File' in the top-left corner, select 'Options', and then click on 'Add-ins' in the left sidebar.

Disable COM Add-ins

At the bottom of the window, ensure 'COM Add-ins' is selected in the 'Manage' dropdown menu and click 'Go'. Uncheck all the boxes to disable the active add-ins, then click 'OK'.

Restart Word

Close Microsoft Word entirely and launch it normally without holding the Ctrl key. If it opens without errors, you can re-enable your add-ins one by one to isolate the problematic extension.

Launch Word in Safe Mode and Disable Add-ins

Safe Mode Successful: If Word runs flawlessly in Safe Mode, the core application is healthy. Disabling problematic add-ins or resetting the Normal.dotm template will permanently resolve the startup errors.

Solution 2

Repair the Microsoft Office Installation

If Safe Mode does not resolve the issue, repairing the Microsoft 365 installation can fix corrupted application files specific to this laptop's local environment.

Solution 3

Verify Account Licensing on the Affected Laptop

Sometimes Microsoft 365 applications refuse to open or throw errors if the local device has licensing conflicts or is signed into the wrong user profile.

Free Microsoft Office alternative

Try WPS Office for a Stable, Error-Free Experience

If Microsoft Word continues to crash or fails to launch on your laptop despite troubleshooting, consider switching to WPS Office. It provides a highly stable, lightweight alternative that prevents common startup errors while keeping your workflow uninterrupted.

1. Download WPS Office: Visit the official WPS website and download the free installation package for your laptop.
2. Install and Launch: Follow the on-screen instructions to install the software, which takes only a few minutes and minimal disk space.
3. Open Your Documents: Launch WPS Writer and open your existing .docx files directly; they will retain all original formatting.

Stable performance on laptops prone to Office application errorsFully compatible with Microsoft Word (.docx), Excel, and PowerPoint formatsLightweight installation that consumes fewer system resourcesFamiliar user interface with zero learning curveCompletely free to use with built-in PDF editing tools

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Frequently Asked Questions

Why does the 'winword.exe /safe' command show a 'Windows cannot find' error?

This error occurs if you forget to include a space before the slash. Ensure you type exactly 'winword.exe /safe' with a single space. If it still fails, the Office installation path might be missing from your system's environment variables, and you should use the Ctrl-key method instead.

How do I exit Safe Mode in Microsoft Word?

To exit Safe Mode, simply close the Word application entirely. The next time you open Word normally (without holding the Ctrl key or using the Run command), it will boot in standard mode.

Will running an Office Repair delete my personal documents?

No, repairing Microsoft 365 only affects the application files and registry keys necessary to run the software. Your personal documents, templates, and files stored on your hard drive or OneDrive will remain completely untouched.

Why does Word work on my desktop but not on my laptop?

This usually indicates a local issue specific to the laptop, such as a corrupted startup template (Normal.dotm), an incompatible third-party add-in installed only on that device, or corrupted local program files requiring a repair.

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