Thanks for joining the thread, jns3.

By launching the QuickBooks chat program, users can log out of the company file. Have you tried executing this process? If not, please follow the steps below:

1. Go to the Company menu, then select Chat with a Coworker).
2. From the Actions drop-down, click Close Company File for Users.
3. Choose the user whose QuickBooks you want to close.
4. Select Close Company File.
5. In the Confirmation window, hit Yes.

Then, you can reset the server where the company file is located.

If this doesn't work, you can reset their password. This is one way of logging a user out of the company file.

Here's how:

1. Go to the Company menu.
2. Select Users or Set up User and Password.
3. Click on the users.
4. Choose Set up users and roles, then Edit.
5. Create a new password and ensure to confirm it.
6. Pick the challenge question and add the solution for security purposes.
7. Once done, hit OK.

If the issue persists, I suggest contacting our QuickBooks Desktop Support. They can assist you with logging off the user and have the capability to screen share.

For future reference, I've added this article if you encounter some problem with the company file: Fix data damage on your QuickBooks Desktop company file.

You can count on me if you need anything else. Have a great day.