Fix Microsoft Word 2021 LTSC Not Opening or Starting on Windows 11
Question details
The user is unable to launch Microsoft Word 2021 LTSC, and previous attempts at basic system and Office repairs have not resolved the issue.
- Product
- Microsoft Word 2021 LTSC
- Device & OS
- Windows 11
- Scenario
- Attempting to launch Word 2021 LTSC after running Windows repair tools in Safe Mode or installing a recent Windows 11 update.
- Observed behavior
- Microsoft Word and other Office applications completely fail to open or start, showing no interface or loading screen.
Ensure you have an active internet connection and your Microsoft account login credentials or Office 2021 product key ready before attempting installation repairs.
Run an Office Online Repair
Use the built-in Windows application repair tool to comprehensively fix corrupted Microsoft Office files.
A standard Quick Repair often fails to resolve deep-seated application corruption, especially if the issue was triggered by an interrupted Windows 11 update. The Online Repair tool downloads and replaces corrupted core files necessary to launch Office applications.
Click the Start menu and select 'Settings', or press the Windows key + I on your keyboard.
Click on 'Apps' from the left sidebar, then select 'Installed apps' (or 'Apps & features').
Scroll down or use the search bar to find 'Microsoft Office LTSC 2021'. Click the three-dot menu icon next to it and select 'Modify'.
In the pop-up window, select 'Online Repair' instead of Quick Repair, then click 'Repair' and follow the on-screen prompts until the process finishes.
Completely Uninstall and Reinstall Office
If the Online Repair fails, a complete removal and clean installation of Office 2021 LTSC is necessary.
Create a New Windows User Profile
Test if the issue is isolated to a corrupted Windows user profile by creating a fresh account.
Use WPS Office When Microsoft Word Won't Open
If Microsoft Word 2021 continues to crash or fails to start, you can use WPS Office as a lightweight, free alternative. It installs in seconds and allows you to open, view, and edit all your existing Word documents seamlessly.
- 1. Download the Application: Visit the WPS Office website and download the free installation package for Windows.
- 2. Install WPS Office: Run the installer. The lightweight installation process usually takes less than a minute.
- 3. Open Your Word Documents: Right-click your unopenable Microsoft Word file, select 'Open with', and choose WPS Office to continue your work immediately.
Frequently Asked Questions
Why did a Windows 11 update cause Word 2021 LTSC to stop opening?
Windows updates can occasionally modify shared system libraries or permissions that Microsoft Office depends on. If the update process is interrupted or conflicts with Office registry keys, applications like Word will fail to launch.
Will completely reinstalling Microsoft Office delete my saved documents?
No. Uninstalling or reinstalling Microsoft Office only removes the application files. Your personal documents, spreadsheets, and presentations saved on your local hard drive or OneDrive will remain unaffected.
Does creating a new Windows user account use up a lot of storage space?
Creating a new basic local user account uses very little disk space initially, typically around a few megabytes for the registry and profile folders. Storage will only increase as you save new files or install apps specific to that user.
