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Quick summary
Locking cells in Microsoft Excel prevents unauthorized edits by applying sheet protection with a password. Use the Review tab and Protect Sheet feature to secure your spreadsheet data in just a few clicks.
Steps
- Go to the Review tab and click on Protect Sheet.
- In the Protect Sheet window, enter a password to prevent unauthorized changes, then click OK.
- Confirm the password if prompted, then click OK to finalize cell locking.
