How to Make Your Excel Workbook Read Only

Read-only Workbook

1. Open a workbook.
2. On the File tab, click Save As.
3. Click Browse.
4. Click on the Tools button and click General Options.
5. In the Password to modify box, enter a password and click OK. ...
6. Reenter the password and click on OK. ...
7. Enter a file name and click Save.