I appreciate you checking back with us, @Angel77877.
Have you checked your firewall settings on the server computer? If not, let's go ahead and check the Mac OS firewall settings to make sure it's set to allow incoming connections. To do that, follow the steps below:
1. Go to the Apple menu, then select System Preferences.
2. Choose the Security & Privacy icon, then the Firewall button.
3. Select the Firewall Options button. If it’s grayed out, click the lock icon to unlock it.
4. Click Allow Incoming Connections.
You also need to verify if the sharing permissions are set correctly on the host computer. Here’s how:
1. Go to the Apple menu and select System Preferences.
2. Select the Sharing icon.
3. Mark the File Sharing checkbox.
4. Select + under the Shared Folders column and browse to the folder where the company is located, then select Add.
5. Under the Users column, the permission should be set to Read and Write for Everyone or just the specific users who will be using QuickBooks.
For more details and other recommended solutions, check out this article: Troubleshoot multi-user issues for QuickBooks Desktop for Mac.
If you continue to have issues, you can use the link I'm including below to connect with our chat team directly:
Please don't hesitate to let me know if you have any additional questions or concerns. Have a good one!
