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QuickBooks is designed to make accounting easier, especially in workplaces where multiple users need to access the same company file simultaneously. However, sometimes users encounter an annoying issue — QuickBooks Error H202 — when trying to switch from single-user to multi-user mode. This error prevents QuickBooks from connecting to the company file stored on the server, disrupting business operations. Let’s explore what causes this error and how to fix it quickly. What Is QuickBooks Error H202?Error H202 occurs when the workstation (the computer trying to access the file) cannot communicate with the server hosting the company file. Essentially, QuickBooks is unable to connect to the database on the host computer, leading to the message: This means that the multi-user connection between your workstation and the server has been interrupted. Why Does QuickBooks Error H202 Occur?Several factors can trigger Error H202: Incorrect hosting configuration between the server and workstations. Firewall or antivirus software blocking communication between computers. QuickBooks Database Server Manager not running on the server. Network issues or DNS problems preventing the workstation from locating the server. Damaged or corrupted QuickBooks company file (.QBW). Signs of QuickBooks Error H202You might notice one or more of these symptoms: QuickBooks freezes or lags when opening the company file. Error message “H202” appears when switching to multi-user mode. The company file opens in single-user mode only. Multi-user mode works on some computers but not others. How to Fix QuickBooks Error H202 Quickly1. Check Hosting SettingsEach workstation should have hosting turned off, and the server should have it on. On the workstation, open QuickBooks > File > Utilities. If you see “Host Multi-User Access,” do not click it (this means hosting is off). On the server, ensure “Host Multi-User Access” is selected. This ensures that only the server hosts the company file. 2. Run QuickBooks Database Server ManagerThis tool helps manage your multi-user setup. On the server, open QuickBooks Database Server Manager (found in the QuickBooks Tool Hub). Click Start Scan to locate your company files. When the scan completes, restart QuickBooks and try opening the file in multi-user mode again. 3. Configure Firewall and Network SettingsAdd QuickBooks ports (8019, 56728, 55378–55382) to your firewall exceptions. Make sure the server and workstations are on the same network. Temporarily disable antivirus software to test if it’s blocking QuickBooks. 4. Test the Server ConnectionOn the workstation, press Windows + R, type CMD, and hit Enter. Type ping [server-name] and press Enter. If the ping fails, the server is not reachable — check your network settings. 5. Use QuickBooks Tool HubQuickBooks Tool Hub provides automated troubleshooting. Download the latest version from Intuit’s website. Open Network Issues > QuickBooks Database Server Manager and run the repair. Restart your system and open QuickBooks again. Final ThoughtsQuickBooks Error H202 can halt teamwork and slow down your accounting workflow. However, the good news is that this issue can be fixed by adjusting your hosting settings, verifying your network configuration, and using QuickBooks’ built-in repair tools. If you’ve tried all the above steps and the error persists, reach out to QuickBooks Support or your IT professional for advanced troubleshooting. Fixing Error H202 promptly ensures smoother collaboration and uninterrupted access to your financial data.