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The Problem

You click Microsoft Word in Applications, and nothing happens. Or Word briefly starts, shows the splash screen, then quits immediately. No error message appears. Word is installed, but simply won’t launch. Your Documents are inaccessible without Word.

Quick Fix

Reset Office cache immediately:

Quit Word completely (use Force Quit if necessary: Cmd+Option+Esc)
Open Finder
Press Cmd + Shift + G (Go to Folder)
Type: ~/Library/Containers/com.microsoft.Word/Data/Library/Preferences/
Press Enter
Find com.microsoft.Word.plist file
Drag it to Trash (this is safe; Word will rebuild it)
Empty Trash
Try opening Word again

If Word opens now, it’s fixed. If not, proceed to Step-by-Step Solution.

Step-by-Step Solution

Step 1: Check macOS Version and Update

Outdated macOS versions have Office compatibility issues.

Click Apple menu (top left) > About This Mac
Check your macOS version (should be 10.14 or newer)
Click Software Update
Install all available updates
Restart your Mac
Try opening Word again

Step 2: Launch Word in Safe Mode

This disables add-ins and troubleshoots startup problems.

Quit Word completely
Open Finder > Applications
Find Microsoft Word
Right-click on it
Hold Shift key and click the Word icon in Finder
A dialog appears asking to disable startup programs
Click Disable All
Word will attempt to open
Check if Word launches successfully in Safe Mode

If Word opens in Safe Mode, a startup program is the issue.

Step 3: Clear All Office Cache Files

Corrupted cache files prevent launching.

Complete cache clearing (thorough):

Quit Word
Open Finder, press Cmd + Shift + G
Paste and go to each of these:
- ~/Library/Containers/com.microsoft.Word/Data/Library/Preferences/
- Delete: com.microsoft.Word.plist, com.microsoft.Word.prefs.plist
- ~/Library/Caches/com.microsoft.Word/
- Delete: all contents
- ~/Library/Saved Application State/com.microsoft.Word.savedState/
- Delete: all contents
- ~/Library/Cookies/
- Find and delete: anything Microsoft-related
Empty Trash
Try opening Word

Step 4: Use Microsoft Office Setup Assistant to Repair

Office for Mac includes a built-in repair tool.

Open Finder > Applications
Navigate to Microsoft Office > Office Setup Assistant
Double-click Office Setup Assistant
The assistant window opens
It scans your Office installation
Click Fix if issues are found
Follow prompts to repair
Wait for completion (5-10 minutes)
Try opening Word

Step 5: Disable Microsoft AutoUpdate (Temporarily)

Updates sometimes prevent launch.

Open Finder > Applications > Microsoft Office
Find Microsoft AutoUpdate
Right-click it > Open
Uncheck: “Check for updates automatically”
Close AutoUpdate
Try opening Word

Step 6: Check for Conflicting Software

Third-party software can prevent Word launch.

Think about recent software installations (VPN, antivirus, security tools)
If installed recently, uninstall them temporarily
Try opening Word
If Word opens, the software is incompatible

Common culprits:

Norton antivirus
McAfee security
VPN software (some versions)
Parallels Desktop or other virtualization
Third-party screen recording tools

Step 7: Use Terminal to Remove Office Completely

This removes every trace of Office for a clean reinstall.

Open Finder > Applications > Utilities > Terminal

Paste this command and press Enter:

sudo rm -rf /Applications/Microsoft\ Office
sudo rm -rf ~/Library/Containers/com.microsoft.*
sudo rm -rf ~/Library/Preferences/com.microsoft.*

Type your Mac password when prompted (you won’t see characters)
Press Enter
Wait for completion
Close Terminal
Download Microsoft Word from office.com or App Store
Install fresh

Why This Happens

Cache file corruption — Preference files get corrupted and prevent launch
Incompatible macOS version — Older Word versions don’t run on newer macOS
Damaged Office installation — Installation files incomplete or corrupted
Conflicting add-ins — Third-party extensions crash during startup
Outdated AutoUpdate — Update service prevents launch
System security permissions — macOS prevents unsigned/unrecognized app launch
Insufficient disk space — Less than 2GB free prevents launch
Microsoft account login issues — Activation conflicts

How to Prevent It

Keep macOS updated — Install system updates monthly
Keep Office updated — Use AutoUpdate unless it causes issues
Avoid incompatible add-ins — Don’t install beta Office add-ins
Maintain disk space — Keep at least 5GB free on Mac
Regular cache clearing — Delete Preferences files every 3 months
Check system requirements — Verify Mac meets Office requirements
Restart periodically — Restart Mac weekly to clear temporary files
Disable problematic security software — Some security tools conflict with Office

Still Not Working? Alternative Solutions

Reinstall macOS completely — Wipe and reinstall macOS (nuclear option)
Use Office Online — Access Word through OneDrive or SharePoint web version
Try different user account — Create new Mac user and try Word there
Use Word Online or alternative — Google Docs, Apple Pages, or LibreOffice as temporary solution
Contact Microsoft Support — Provide system info and detailed error timeline
Try Microsoft Office Insider — Alternative version to troubleshoot
Use Mac’s safe boot — Shut Down > Hold Shift while restarting to eliminate startup items, then try Word

Key Takeaways

Cache file deletion fixes 70% of “won’t open” problems on Mac
Safe Mode launch identifies whether add-ins are causing the issue
macOS updates are critical—Office requires newer versions
Office Setup Assistant repair tool is faster than reinstalling
Complete Office removal using Terminal followed by clean install is nuclear option that works when others fail
Mac Office issues are often version-specific and require Mac-specific solutions

תיקון: Word לא נפתח ב-Mac (לא ניתן להפעיל)