We're unable to get the password. I can share with you on how to update it, revmrbill2.
 

Resetting the password in your book can help you update a new one. It is used when you lost, forgot the password for the QuickBooks Desktop Windows computer.

Open QuickBooks Desktop. At the login window, select I forgot my password. Then, fill out the following information on the form for security purposes. 

The license number for the version of QuickBooks Desktop you’re using. It will also ask you to your name, email address, phone number, and ZIP code you originally used when you purchased the product.

For the license number, you can press F2 to see what's your license number. And for the other details needed, you can sign in to CAMPS to find all of this information.

Once everything entered correctly, hit OK. Right after, QuickBooks will guide you through creating a new password. 

Add a comment if you have other questions about the password requirements.