Passwords are case-sensitive and can be a maximum of 15 characters long.
If you lose or forget your password, Word won't be able to recover it for you. Be sure to keep the a copy of the password in a safe place or create a strong password that you’ll remember.
If you're concerned about end-users in your organization losing access to password protected Office files, the DocRecrypt tool might be for you. Note that you have to deploy the DocRecrypt tool BEFORE the file in question is password protected. DocRecrypt can't retroactively recover files that were password protected before you deployed DocRecrypt. For more information see: Remove or reset file passwords using DocRecrypt.
Whether you’re starting from a built-in template or updating one of your own, Word's built-in tools help you update templates to suit your needs. To update your template, open the file, make the changes you want, and then save the template.
In Microsoft Word, you can create a template by saving a document as a .dotx file, .dot file, or a .dotm fie (a .dotm file type allows you to enable macros in the file).