Cannot add users in quickbooks desktop

I greatly appreciate your efforts in conducting initial troubleshooting, @wcarter64. I can offer additional troubleshooting steps to resolve this issue so you can add a new user to QuickBooks Desktop (QBDT).

First, ensure you have updated your QuickBooks Desktop to the latest release so you have the latest security updates and fixes.

If the issue persists after updating, you can verify and rebuild data to help resolve common cases in your company file that prevent you from adding new users in QBDT.

Here's how to verify your company data:

1. Proceed to the Window tab, then Close All. 
2. Click on File and select Utilities.
3. Choose Verify Data. Hit OK. If you see:

• QuickBooks detected no problems with your data—your data is clean, and you don’t need to do anything.
• An error message—search for it on our QuickBooks Desktop support site for the steps to fix it.
• Your data has lost integrity—Data damage was found in the file. Rebuild your data to fix it.

Once done, you can follow these steps to rebuild your company data:

1. Go to the File menu, then choose Utilities.
2. Select Rebuild Data. QuickBooks will prompt you to do a backup before rebuilding your company file. Pick OK.
3. Save your backup, and OK. 
4. When the Rebuild has completed message appears, hit OK. 

After completing these steps, you can add a new user to QuickBooks Desktop again.

For future reference, you can also consider visiting these articles to learn how to modify the primary admin user in QuickBooks Desktop:

• Request to be the primary admin or contact.
• Transfer the primary admin role in QuickBooks Desktop.

If there's anything else you need help with when adding your new user to QuickBooks Desktop, please let me know by leaving a comment below. I'm just a few clicks away to help you again. Keep safe, and have a great day!

@wcarter64 

Run Verify/Rebuild Data utility. Did you encounter any error message?

Thank you for responding and givign me these steps.
 Unfortunately, after running through these, we are still experiencing the same issue.
 The window to edit users and permissions pops up for a split second, and then closes.

Thank you for taking the time to respond to my question.
 Unfortunately, after running through these steps, we still experience the same issue.
 The users and roles box will open for a split second and then close.

Thank you for your follow-up, @wcarter64. I appreciate your efforts in resolving this matter. Since the issue persists despite following the suggested steps, I recommend contacting our support team for further investigation.

Our customer service team possesses the appropriate tools to effectively address this matter. They also have the necessary resources and a safe environment to check your account and find out what caused this concern.

To get in touch with them, please follow the steps below:

1. Open QuickBooks.
2. Go to Help, then select QuickBooks Desktop Help/Contact Us.
3. Click Contact Us, then enter a brief description of your concern.
4. Hit Continue and sign in to your Intuit account.
5. Choose Chat with us or Have us call you.

For Pro, Premier, and Plus users, support is available Monday to Friday from 6 AM to 6 PM. Enterprise users can reach out at any time, any day.

For reference, please read this article: Contact QuickBooks Desktop support.

If you're interested in setting up data-level permissions in your QBDT company file, you can find useful guidance in this article: Create data level permissions in QuickBooks Desktop Enterprise.

The Community space is available if you have other concerns about managing your users and roles in QBDT. You can always utilize the Reply button if you have one.

@wcarter64 

Have you run the Verify/Rebuild Data utility mentioned by On Beta ?

Any error message?

I did run it. It's the same as the solution offered in the first reply, right? I am not being rude. I am honestly curious as I don't quickbooks, so to speak. I am helpdesk attempting to help the accounting team. So I ran the steps offered by the first reply.
Thank you for your help. I can use all i can get.

Sorry, I didn't address your second question>
 I got no errors. It ran and said it didn't find anything wrong.

Now we have created a new company and having the same problem.

Open the sample file. Did you encounter the same problem?