everyday mac tools

Password protect a Word document on a Mac

· 7 min read

To password protect a Word document on a Mac, open it in Word, click the Review tab, click Protect Document and type a password in the Password to open field. Confirm it, click OK and save. From then on the file is encrypted, and Word on any Mac or PC asks for the password before it shows a single line.

The options beside it in the same dialog are where people get caught, because some of them look like protection and are not.

Password protect a Word document on a Mac, step by step

These steps are for Word for Mac from 2016 onward, including the Microsoft 365 version.

  1. Open the document in Word.
  2. Click the Review tab on the ribbon, then Protect Document. If you cannot see the button, widen the window; the ribbon drops buttons when it runs short of space. Some versions also open the same dialog from File, Passwords in the menu bar.
  3. In the Security section, type a password in Password to open.
  4. Retype it when Word asks you to confirm, then click OK.
  5. Press Cmd-S. The protection is written into the file when it saves, not when you click OK.
  6. Close the document and open it again. Word should ask for the password before anything appears.

Keep the document in the current .docx format. If it is an old .doc file, use File, Save As and choose Word Document (.docx) as the format first; the older format uses an older, weaker encryption scheme.

To take the password off later, open the document, go back to Review, Protect Document, delete the dots in Password to open, click OK and save.

Open, modify and read-only: which ones actually protect

The Protect Document dialog offers several kinds of protection, and they are not equal.

Password to open. This one encrypts the file. Without the password the contents are unreadable, whether someone opens it in Word, drags it into another app or looks at the raw bytes. Quick Look and Spotlight cannot read the text either, since there is nothing readable to preview or index. This is the only option that keeps a document private.

Password to modify. This encrypts nothing. Anyone can open the file read-only, which still shows every word, then use File, Save As to make an editable copy. Other apps need not honor it at all. It guards against accidental edits by people you trust.

Read-only recommended. Word asks people, as the file opens, whether they want it read-only. Depending on your version this is a Read-only recommended checkbox or an Always Open Read-Only button on the Review tab. Answering No opens the document for full editing. The trap is that the file feels guarded in daily use when nothing is guarding it.

Restricting edits to tracked changes, comments or forms. The lower part of the dialog limits which kinds of editing Word allows. Word enforces it, not encryption: the text stays readable, and anyone who digs into the file’s internals can remove it. Good for steering a review, useless for secrecy.

If the goal is that nobody reads the document without your say-so, only Password to open counts.

What the password does not cover

A password protects that file from the moment you save it, and nothing else.

  • Earlier copies. A version you emailed last month, a Time Machine backup from before you set the password and older versions in OneDrive’s version history are all still unprotected.
  • The file name. Finder and Mail still show it. Call the file Letter 2026-09, not Settlement terms draft.
  • Anyone who has the password. Once they open the document they can copy, print or save it without protection.
  • Live collaboration. Co-authoring does not work on password-encrypted files. For a document several people edit at once through OneDrive or SharePoint, control who has the link instead.
  • A forgotten password. Microsoft cannot recover it. Save it in a password manager, such as the Passwords app on macOS Sequoia or later, the moment you set it.

Sending a protected Word document

The encryption travels with the file, so a protected .docx is safe to attach to an email as long as the password does not travel with it.

  1. Send the password by a different route: a text message or a phone call.
  2. Use three or four unrelated words rather than a short string of symbols. An attached file can be attacked offline for as long as someone likes.
  3. Check what the recipient uses. Word on a Mac or Windows PC asks for the password and opens the file. Word in a web browser, and many other apps and previewers, cannot open an encrypted Word file at all.

If the recipient only needs to read the document, send a PDF instead. In Word, choose File, Save As, pick PDF and select Best for printing, which makes the PDF on your Mac; the option for electronic distribution and accessibility uses a Microsoft online service. Then add an open password in Preview, as described in password protect a PDF on a Mac.

No Word? Pages can password protect a Word file

Pages is free on every Mac, and it can write a password-protected Word document that Word opens normally after asking for the password.

  1. In Finder, right-click the .docx and choose Open With, Pages.
  2. Choose File, Export To, Word.
  3. Tick Require password to open and type the password in both fields.
  4. Click Advanced Options and check that Format is set to .docx.
  5. Click Next, name the file and save it.

Pages converts the document when it opens it, so check the result. Complex layouts and some Word-only features may not survive the round trip; letters and plain reports usually come through fine. If you would rather keep the document in Pages’ own format, password protect Pages, Numbers and Keynote files covers File, Set Password and opening with Touch ID.

Locking Word files you keep rather than send

Word’s password is set per document, each with its own password to remember. For a folder of contracts and letters that stays on your Mac, it is simpler to lock the folder once. macOS can do this with an encrypted disk image: encrypt a folder on a Mac with Disk Utility walks through it, including the unencrypted original it leaves behind.

Hushbox does the same job in place. Right-click a file or folder in Finder, choose Lock with Hushbox, and it becomes a locked item in the same folder that opens with Touch ID or your Hushbox password. It works on any format, locks again when the screen locks or the Mac sleeps, and keeps what is inside out of Spotlight, Finder Recents and Quick Look. Two limits matter: the name still shows in Finder (a locked Lease.docx appears as Lease), and copies made before you locked it, in backups or sent mail, are unchanged. It does not send files, so for anything you email, use Word’s own password.

Questions

Can I password protect a Word document without Microsoft Word? Yes. Open it in Pages, choose File, Export To, Word, and tick Require password to open. The result is an encrypted .docx that Word opens once the password is entered.

How do I remove the password from a Word document? Open it with the password, go to Review, Protect Document, delete the password from Password to open, click OK and save. Anyone who knows the password can do this, which is worth remembering before you share it.

What if I forget the password to a Word document? Microsoft cannot retrieve it. Look for an unprotected copy: an earlier version in Time Machine, an attachment in your sent mail, a copy on another device. Be wary of online unlocking services; uploading a private document to a stranger defeats the point.

Does a password to modify stop people reading my document? No. It only asks for a password before editing. Anyone can open the file read-only and read all of it.