# How to Lock Cells in Microsoft Excel

> To lock cells in Microsoft Excel, go to the Review tab and click Protect Sheet. Enter a password in the Protect Sheet window to prevent unauthorized changes and click OK. Finally, confirm the password if prompted and click OK.

Canonical: https://livedemo.ai/tutorials/how-to-lock-cells-in-microsoft-excel/
Apps: Microsoft, Excel
Updated: 2026-10-05
Interactive demo: https://story-api.livedemo.ai/workspaces/62255d3d3304f17b8f5e2d03/stories/692a4856ab56e05a00ff3259/preview?step=1

## Steps

1. Go to the Review tab and click on Protect Sheet .
2. In the Protect Sheet window, enter a password to prevent unauthorized changes, then click OK .
3. Confirm the password if prompted, then click OK .