When QuickBooks multi-user mode not working, it can hinder collaborative efforts. Start by ensuring QuickBooks is updated to the latest version. Check that all users have proper permissions and that the hosting mode is enabled on the server computer but disabled on workstations. Verify the QuickBooks Database Server Manager is running and that the firewall settings allow QuickBooks communication. If the issue persists, restart all computers and the server. Additionally, ensure the network is functioning properly. For unresolved issues, consider contacting QuickBooks support for expert assistance. Regular maintenance and verification of network settings can help prevent multi-user mode disruptions.

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