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 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 will …

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 from making …

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 editing.

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 protecting a …

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 can view.)

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. Select …

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 becomes read-only, …

If your file opened in Microsoft Office as "Read-only", and you're not sure why, this article can help you remedy that situation.

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 will …