Protect a Word document with a password - Microsoft Support
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.
Allow changes to parts of a protected Word document
To assign a password to the document so that users who know the password can remove the protection and work on the document, type a password in the Enter new password (optional) …
Restrict access to documents with Information Rights …
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, …
Require a password to open or modify a workbook
Caution: When you create a password for a workbook, write down the password and keep it in a secure place. If you lose the password, you can't open or gain access to the password …
Make a document read only in Word - Microsoft Support
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 …
Quick tips: Share and collaborate in Word for Windows
With Word for Windows, share your documents with co-workers to start collaborating immediately.
Password protection for presentations in PowerPoint
A password helps to prevent other people from opening or modifying a presentation. Caution: When you create a password for a presentation, record the password and keep it in a secure …
Change or remove workbook passwords - Microsoft Support
You cannot open a workbook or document that has been password protected in the Windows-based version of Excel or Word if the password is longer than fifteen characters. If you want to …
You may not be prompted for the password when you open a …
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 …
Add or remove a digital signature for Microsoft 365 files
Learn about digital signatures, digital IDs, and signature lines to use in Word, Excel, and PowerPoint.