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 Protection . In the box that opens, type a password you’ll be able to remember, and then ty

Word Online can’t encrypt a document with a password, and it can’t open documents encrypted with a password. If you want to protect the file with a password, click or tap Open in Word to open your document in the desktop version of Word. After you'

Open your Microsoft Word document. Double-click the Word document that you want to protect with a password. The document will open in Microsoft Word. If you haven't yet created the document: open Microsoft Word, click Blank document, and create your d