QuickBooks Error H202 is a common networking issue that occurs when the program is unable to reach the company file on another computer. This usually prevents switching to multi-user mode and disrupts daily operations. To resolve the issue, one needs to check Windows firewall settings, enable hosting on the right server, and ensure QuickBooks services are running properly. In some cases, advanced fixes such as configuring Database Server Manager are necessary. Businesses should avoid delays in fixing this error to prevent file inaccessibility. If you’re stuck resolving QuickBooks Error H202, professional guidance is available at +1-866-408-0444 for accurate step-by-step solutions.