Document.Unprotect (Word)

Removes protection from the specified document.

If the document isn't protected, this method generates an error.

Unprotect (Password)

Password: The password string used to protect the document. Passwords are case-sensitive. If the document is protected with a password and the correct password isn't supplied, a dialog box prompts the user for the password.

If ActiveDocument.ProtectionType <> wdNoProtection Then 
 ActiveDocument.Unprotect Password:=strPassword 
End If