When trying to switch QuickBooks to multi-user mode, users may encounter Error H202, a sign that the workstation cannot reach the server hosting the company file. This issue implies that the communication between QuickBooks and the host computer is being blocked, often due to incorrect firewall configurations, DNS misalignment, or the QuickBooks services being stopped. To troubleshoot, ensure that QuickBooks Database Server Manager is installed and running on the server, check hosting settings on workstations, and verify that necessary ports (such as 8019, 56728, and others) are open. Forum discussion on these steps helps users understand different scenarios, since not all networks are configured the same way. A methodical approach often uncovers the cause quickly, but complex cases may require in-depth analysis. If you’ve tried multiple solutions and still encounter the error, calling +1-866-408-0444 provides personalized guidance and reduces the chances of extended downtime.
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