Problem: Office applications (Word, Excel, Outlook, etc.) do not open or show errors.
Steps to Resolve:

1. Repair Office installation: Go to Control Panel > Programs > Programs and Features, select Office, and choose "Repair."
2. Delete cached files: Navigate to C:\Users\[YourUsername]\AppData\Local\Microsoft\Office, and delete temporary files.
3. Check for updates: Open an Office app, go to File > Account > Update Options, and click "Update Now."
4. Disable compatibility mode: Right-click the Office app shortcut, go to Properties > Compatibility, and uncheck "Run this program in compatibility mode."
5. Reinstall Office: Uninstall Office via the Control Panel, then download and reinstall the latest version from the Office portal.