On the File menu, click Info. Click on Protect Workbook and select the Always Open Read-Only. See also Prompt to open a workbook as read-only

If you don't want content reviewers to accidentally change a Word document or an Excel spreadsheet, you can use formatting and editing restrictions. Note: To further restrict reviewers …

If you want to remind everyone that a workbook should only be changed if necessary, you can recommend that the workbook be opened as read-only. Note: Prompting to open as read-only …

If you don't want content reviewers to accidentally modify your document, you can make the document read only before sending it for review. Another method is to restrict formatting and …

Excel gives you the ability to protect your work, whether it’s to prevent someone from opening a workbook without a password, granting Read-Only access to a workbook, or even just …

To set the workbook as read-only, select Anyone with the link can edit, clear the Allow editing check box, and then select Apply. (You'll see that that option now reads Anyone with the link …

Use Mark as Final to make your Word, Excel, or PowerPoint file read-only. When you mark as final, typing, editing commands, proofing marks are disabled or turned off, and the file …

Try it! Use read-only protection and passwords to prevent other people from opening or modifying documents. Make documents read-only Open the document that you want to make read-only. …

When you try to open a Excel workbook, PowerPoint presentation, or Word document on your mobile device, you might receive a message stating that the file is locked for editing by …

If you want to remind everyone that a workbook should only be changed if necessary, you can recommend that the workbook be opened as read-only. Note: Prompting to open as read-only …