QuickBooks Error H202: How to Fix It When trying to access a company file located on another computer, you might encounter the frustrating QuickBooks Error H202 Switching to Multi User Mode . This error prevents multi-user mode in QuickBooks Desktop, interrupting workflow and causing unnecessary delays. But don’t worry — with a little know-how and some professional tips, you can fix this issue in no time. Resolve QuickBooks Error H202 with expert guidance. Call our support team at +1-866-409-5111 for fast and efficient troubleshooting. What is QuickBooks Error H202? QuickBooks Error H202 typically occurs when the software can't connect to the server computer (where your company file is stored). It means your QuickBooks Desktop is trying to establish a connection in multi-user mode but fails due to incorrect settings or blocked communication. Why QuickBooks Error H202 Happens Here are the most common reasons for this error: ● Incorrect hosting configuration ● Blocked ports or firewall settings ● Issues with QuickBooks Database Server Manager ● DNS server conflicts ● Damaged or corrupted .ND file Signs You’re Dealing with Error H202 Watch out for these red flags: ● You get the message: “ This company file is on another computer, and QuickBooks needs some help connecting. ” ● Multi-user mode fails repeatedly ● QuickBooks freezes or lags ● Network issues while accessing the file How to Fix QuickBooks Error H202 Let’s dive into the step-by-step solutions you can try to resolve this error: Step 1: Test Network Connectivity 1. Go to the workstation showing Error H202. 2. Open the Run window (press Windows + R ). 3. Type cmd and hit Enter. 4. Type ping [server-name] and press Enter. 5. If you receive delayed replies or no reply at all, there is a network problem. Step 2: Use QuickBooks File Doctor 1. Download and install the QuickBooks Tool Hub 2. Go to Company File Issues tab. 3. Launch QuickBooks File Doctor 4. Choose your company file and let it scan for issues. This tool often fixes QuickBooks Error H202 automatically. Step 3: Verify Hosting Settings On every workstation: 1. Open QuickBooks and go to File > Utilities 2. If you see “Host Multi-User Access,” don’t click it. 3. If you see “Stop Hosting Multi-User Access,” click to stop it. Only the server computer should host multi-user access. Step 4: Configure Firewall and Add Port Exceptions QuickBooks needs certain ports open: ● QuickBooks 2024: 8019, 56728, 55378-55382 ● QuickBooks 2023 and earlier: Similar port ranges Add inbound and outbound firewall rules for these ports: 1. Go to Control Panel > Windows Defender Firewall > Advanced Settings 2. Click on Inbound Rules > New Rule 3. Choose Port , enter the port numbers, and allow the connection. Repeat for Outbound Rules Step 5: Restart QuickBooks Database Server Manager 1. Press Windows + R , type services.msc , and press Enter. 2. Look for QuickBooksDBXX (where XX is your version year). 3. Right-click > Restart. Step 6: Rename .ND File 1. Navigate to the folder where your company file is stored. 2. Locate the file with .ND extension (e.g., CompanyFile.qbw.nd ). 3. Right-click and select Rename 4. Add .old at the end. QuickBooks will recreate a new .ND file next time you open the file. Read Also: QuickBooks Desktop Payroll Update Not Working Preventing QuickBooks Error H202 in the Future To avoid this error in the long run: ● Ensure proper server setup ● Keep QuickBooks and Windows updated ● Schedule regular network diagnostics ● Use professional IT support when making changes to network configurations Conclusion QuickBooks Error H202 can be a major hurdle for businesses that rely on multi-user access. Fortunately, with a few targeted steps — or a quick call to the experts at +1-866-409-5111 — you can get back to running your business smoothly. Whether it’s a firewall block, misconfigured server, or broken file connection, now you know how to handle it confidently.