Microsoft Office Files Don't Open

•  Press Win + X and choose Command Prompt (Admin).

• On the command line, input: icacls "%programfiles%\Microsoft Office <n> (note: replace "<n>" with version number)" /grant *S-1-<n>-2-1: (OI) (CI) RX

• Hit Enter This should help you open the office files.

• You can also repair Office installation by finding Office in Programs & Features. Right-click on Office and select Online Repair.