QuickBooks Error H202 is a common issue encountered by users when switching QuickBooks Desktop to multi-user mode. This error indicates that the multi-user connection to the server is blocked, and the workstation is unable to access the company file stored on another computer (server). This error typically occurs when QuickBooks cannot reach the server due to misconfigured hosting settings or network issues. Understanding the root cause of this error and knowing how to resolve it can help ensure seamless multi-user operation in QuickBooks.

Causes of QuickBooks Error H202

Several factors can trigger QuickBooks Error H202, including:

1. Incorrect Hosting Configuration: Each workstation should be set to not host multi-user access. Only the server where the company file is stored should have hosting enabled. If any workstation is incorrectly configured to host multi-user access, it can lead to Error H202.
2. Blocked Ports: QuickBooks requires certain ports (like 8019) to be open to communicate with the server. If these ports are blocked by a firewall or security software, the connection can be interrupted, resulting in Error H202.

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1. Damaged or Missing Network Data (.ND) File: The .ND file is a configuration file that allows QuickBooks to access a company file in a network or multi-user environment. If this file is damaged or missing, QuickBooks may not be able to communicate with the server.
2. DNS Server Issues: Incorrect DNS settings or an unstable DNS server can prevent QuickBooks from connecting to the server, leading to Error H202.
3. QuickBooks Database Server Manager Not Running: The QuickBooks Database Server Manager is essential for managing multi-user access. If it's not running or is not correctly configured, it can cause Error H202.

Symptoms of QuickBooks Error H202

When Error H202 occurs, you may notice the following symptoms:

• You cannot switch to multi-user mode.
• A message appears stating, "Error H202: This company file is on another computer, and QuickBooks needs some help connecting."
• QuickBooks runs slowly in multi-user mode.
• Users are unable to access the company file on the server from their workstations.

Steps to Resolve QuickBooks Error H202

Resolving QuickBooks Error H202 requires a series of troubleshooting steps. Here’s a detailed guide to help you fix this issue:

1. Verify Hosting Settings

Ensure that the hosting settings are correctly configured. Only the server (the computer where the company file is stored) should have hosting enabled.

• Open QuickBooks on the server and each workstation.
• Go to File > Utilities.
• On the server, ensure that Host Multi-User Access is selected.
• On each workstation, ensure that Stop Hosting Multi-User Access is selected. If it says Host Multi-User Access, do not select it.

2. Use the QuickBooks File Doctor

The QuickBooks File Doctor is a built-in tool that can automatically diagnose and fix many network issues.

• Download and run the QuickBooks Tool Hub.
• Select the Company File Issues tab.
• Click on Run QuickBooks File Doctor.
• Choose your company file and select Check your file. Click Continue.
• 3. Configure the Firewall Settings

Check the firewall settings to ensure that the necessary ports for QuickBooks are open.

• Open the Control Panel on your server.
• Go to System and Security > Windows Firewall.
• Click on Advanced Settings.
• Right-click on Inbound Rules and select New Rule.
• Select Port and then click Next.
• Add the necessary ports (8019, 56728, 55378-55382).
• Repeat the steps for Outbound Rules.
• 4. Check the .ND and .TLG Files
• Navigate to the folder where your company file is stored.
• Look for files with the same name as your company file but with extensions .ND and .TLG.
• Rename these files by adding .old at the end (e.g., companyfile.qbw.nd.old).
• Open QuickBooks again and try to switch to multi-user mode.
• 5. Restart QuickBooks Database Server Manager
• Open the QuickBooks Tool Hub.
• Go to Network Issues.
• Select QuickBooks Database Server Manager.
• Click Start Scan if your company file folder is listed, or click Browse to find it.
• Once the scan is complete, close the tool and try to open your company file again.

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6. Check DNS Settings

Incorrect DNS settings can also cause Error H202. Consider configuring your DNS settings or consult your IT professional for assistance.

7. Add Your Server to the Windows Hosts File

• On your workstation, go to the C:\Windows\System32\Drivers\Etc folder.
• Open the hosts file with Notepad.
• Add the IP address and server name at the end of the file and save it.

Conclusion

QuickBooks Error H202 can be frustrating, but it is typically resolvable by following these steps. Ensuring correct hosting settings, open ports, and a properly running QuickBooks Database Server Manager are critical to preventing this error. Regularly updating QuickBooks and your network configurations can also help in avoiding similar issues in the future. If the error persists despite troubleshooting, consider seeking professional technical support.