Users often face QuickBooks Error H202 when attempting to switch to multi-user mode due to blocked communication between workstations and the server. Engage in this forum to learn how others fixed network discovery issues, misconfigured database manager settings, and server IP conflicts. Share your troubleshooting steps or follow community-proven methods to restore access. This thread covers common H202 fix techniques including QuickBooks File Doctor usage. For helpful recommendations, connect with QuickBooks professionals at +1-866-408-0444.