The QuickBooks h202 error pops up when users try to switch to multi-user mode without authorization. QuickBooks experts can easily troubleshoot this error. However, if you want to resolve it on your own, here are few ways to fix it.
Solution 1 – Check Strong Network Connectivity
Solution 2 – Use the QuickBooks File Doctor Tool
Solution 3 – Configure your Firewall Settings
Solution 4 – Make Sure the QuickBooks Services are Running
Solution 5 – Add your Server to Windows Hosts File
Solution 6 – Create a New Folder for Your QBW File
Solution 7 – Ensure no other client system is trying to host the same company file
Solution 8 – Restart QuickBooks Database Server Manager
Solution 9 – Recreate the .ND file