You may have noticed other options under the Protect Document menu. If you share the document with someone else, they will need the password to open it. Next time you want to open the document, you will be prompted to enter the password before getting access. That’s how to protect a word document on a PC. When you save your document, it is password protected.Verify your password a second time to make sure you didn’t make a mistake in typing it in and then hit OK to finalize.You can use anything you like, although it is case-sensitive. Encrypt with Password: For basic password protection, select Encrypt with Password from the pull-down menu.Info > Protect Document: When you click Info, click on Protect Document.File> Info: Select File in the upper left corner or and look for Info, which is usually the fourth item down under Home, New, and Open.Open: Open the document on your computer.How to Password Protect a Word Document on a Mac How to Password Protect a Word Document on a PC