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Fix Cannot Sign In to Word Because JavaScript is Required
Question details
Users are unable to sign in to Microsoft Word due to an error message stating that JavaScript is required.
- Product
- Microsoft Word / Microsoft 365
- Device & OS
- Windows
- Scenario
- Attempting to sign in to Microsoft Word or activate Microsoft 365 desktop applications.
- Observed behavior
- A prompt appears stating 'JavaScript is required to sign in', preventing the user from completing the login or activation process.
Ensure you have a stable internet connection and save any open documents before restarting your computer or modifying application settings.
Perform a Quick Repair of Microsoft 365
Using the built-in Windows repair tool can resolve corrupted installation files causing the sign-in prompt error.
Microsoft Windows includes a built-in repair utility specifically for Office applications. Running a Quick Repair is the fastest way to fix background service glitches without needing an internet connection.
Click on the Start menu and select 'Settings', or press the Windows key + I on your keyboard.
Go to 'Apps' from the left-hand menu and click on 'Installed apps'.
Scroll down to find 'Microsoft 365' (or Office). Click the three dots next to it and select 'Modify'.
Choose the 'Quick Repair' option and click 'Repair'. Follow the on-screen prompts to complete the process, then restart your computer.
Enable JavaScript in Your Default Browser
Since Office sign-in relies on web-based authentication, ensuring JavaScript is enabled in your default browser is essential.
Try WPS Office for a Hassle-Free Document Experience
Tired of complicated sign-in errors and activation issues? WPS Office offers a free, lightweight, and highly compatible alternative to Microsoft Office. Enjoy a familiar interface without the frustrating setup hurdles.
- 1. Download the Installer: Visit the official WPS website and download the free WPS Office installation file.
- 2. Install the Software: Run the installer and follow the simple on-screen instructions to set up WPS Office on your device.
- 3. Start Creating: Launch WPS Writer to instantly open your existing Word documents without any sign-in barriers.
Frequently Asked Questions
Why does Microsoft Word need JavaScript to sign in?
Microsoft 365 uses a modern web-based authentication interface for signing in. This login window relies on web technologies, specifically JavaScript, to securely process your credentials and communicate with Microsoft's servers.
Which browser's settings affect the Word sign-in window?
Word typically uses Microsoft Edge WebView2 or your system's default browser engine for the sign-in prompt. Ensuring JavaScript is enabled in Microsoft Edge and your Internet Options is the best way to prevent login script errors.
Will an Online Repair fix the JavaScript error if Quick Repair fails?
Yes. If the Quick Repair doesn't resolve the issue, running an Online Repair can fix deeper corruption by downloading and reinstalling fresh Microsoft 365 files and associated background services.
