Step 1 - Close Word, Outlook, and any other Office programs.
Step 2 - Type 'program' in the Windows search bar in the bottom-left of the taskbar, then click to open the 'Add or Remove programs' app.
Step 3 - Scroll down to find your version of Microsoft Office.
Step 4 - Click to expand the menu, then choose 'Modify'.
Step 5 - Use the default 'Quick Repair' option, then click 'Repair'.
Step 6 - Allow 15 minutes for the repair process to complete.