Go to File > Info > Protect Document > Encrypt with Password. Type a password, press OK, type it again and press OK to confirm it. Save the file to make sure the password takes effect.

Click Review > Restrict Editing. Under Editing restrictions, check Allow only this type of editing in the document, and make sure the list says No changes (Read only). Click Yes, Start Enforcing …

Removing a password from a document is a simple process, but you have to know the original password. Open the document and enter its password. Go to File > Info > Protect Document > …

Use Restrict Editing to protect parts that can or can't be changed, who can make changes, find areas you can edit, or unlock a protected document.

Open the password-protected document. Select File > Info. Select Protect Document > Encrypt with Password. Note: In Excel, select Protect Workbook. In PowerPoint, select Protect …

Select Info, choose Protect Document, point to Restrict Permission by People, and then select Restricted Access. In the Permissions dialog box, select Restrict permission to this document, …

Step 1: Show the Developer tab on the ribbon Right click on any of the ribbon commands. For example, right click on Home and then click Customize the Ribbon. Open Customize the …

When you open a Microsoft Word document that is protected with a "modify" password, you may not be prompted for the password if the document exists in a Microsoft Exchange or Microsoft …

Restrict changes to files Open a document you want to protect, then: Select File > Info. Select Protect Document. Choose how you want to protect the document. Want more? Stop sharing …

In the Password Protection dialog box, type the password you want into the Enter Password box. Confirm the password by typing it again into the Confirm Password box, and then select OK.