I’m dealing with the notorious QuickBooks Error H202 and have found some fixes that might help others facing the same issue. Here’s a quick guide:

Network Testing: Use the command prompt to ping your server from the affected workstation. If the response is slow or there are packet losses, your network might be the issue.

Diagnostic Tool: Use the QuickBooks Connection Diagnostic Tool. It can automatically detect and fix network issues that are causing this error.

Check Hosting: Ensure that only one computer (the server) is set to host the company file. Other workstations should have the hosting mode turned off.

Firewall Configuration: Adjust your firewall settings to allow QuickBooks Error Code H202 communications, which might be blocked.

Edit Hosts File: Add your server's IP address and name to the Windows hosts file on the workstation.
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