Quick Fixes to Try First
Restart your computer - Many Office issues resolve after a full reboot
Repair Office installation:
Go to Windows Settings > Apps > Installed Apps
Find Microsoft Office > Click Modify > Choose "Quick Repair"
If that fails, try "Online Repair"
If Documents Won't Open
Reset File Associations
Right-click any Word document (.docx)
Select "Open with" > Choose Word
Check "Always use this app"
If Word isn't listed, browse to:
C:\Program Files\Microsoft Office\root\Office16\WINWORD.EXE
Safe Mode Troubleshooting
Press Win+R, type winword /safe and press Enter
If Word opens in safe mode, the issue is likely with:
Add-ins (disable them via File > Options > Add-ins)
Normal.dotm template (rename it to force recreation)
If You Can't Copy Documents
Check Clipboard Issues
Press Win+V to open clipboard history
Clear clipboard and try copying again
Temporary File Cleanup
Press Win+R, type %temp% and delete all files
Empty Recycle Bin
Advanced Solutions
Reset Office Settings
Close all Office apps
Run this command in Command Prompt (Admin):
cd %programfiles%\Microsoft Office\Office16
for /f %x in ('dir /b ..\root\office16*.exe') do (cmd /c %x /resetuserdata)
Complete Reinstall (Last Resort)
Uninstall Office via Control Panel
Download fresh copy from office.com
Reinstall with your Microsoft account
Prevention for Future
Disable automatic Outlook updates (File > Office Account > Update Options)
Keep regular backups of important documents in OneDrive/Google Drive