Resolve QuickBooks Error H505 in Multi-User Mode
- smith28781525
- Aug 6, 2025
- 3 min read
QuickBooks Error H505 is a common issue that prevents users from accessing a company file stored on another computer. It usually pops up when trying to switch to multi-user mode, indicating a network connection problem or a misconfigured hosting setup.
In this comprehensive guide, we’ll explain what causes this error, how to resolve it using various troubleshooting steps, and how to prevent it in the future.
Quickly fix QuickBooks Error H505 and restore multi-user access. Call +1(866)500-0076 for expert help.
What Is QuickBooks Error H505?
Error H505 in QuickBooks occurs when the software cannot access a company file located on a different system in the network. This error belongs to a group known as H-series errors (H101, H202, H303, and H505) that affect QuickBooks multi-user setup.
You’ll typically see a message like:
"You are trying to work with a company file that is located on another computer, and this copy of QuickBooks cannot reach the server (Error Code: H505)."
Causes of QuickBooks Error H505
This error usually results from network configuration issues or incorrect hosting settings.
Common causes include:
Incorrect hosting configuration on the server
QuickBooks Database Server Manager not running
Firewall blocking communication between computers
DNS or IP address conflicts
Damaged or missing .ND (Network Descriptor) file
The server computer is not accessible or offline
How to Fix QuickBooks Error H505 – Step-by-Step Guide
Before you start, ensure QuickBooks is installed on the server and all systems are connected to the same network.
Step 1: Use QuickBooks File Doctor
Download and install the QuickBooks Tool Hub (latest version).
Open it and select Company File Issues.
Click Run QuickBooks File Doctor.
Browse and select your company file.
Let the scan complete and fix any detected issues.
This tool helps resolve QuickBooks network error H505 and related multi-user issues.
Step 2: Check Hosting Settings on All Workstations
Only the server computer should host the company file.
Open QuickBooks on each workstation.
Go to File > Utilities.
If you see "Stop Hosting Multi-User Access", select it.
If it says "Host Multi-User Access", do nothing.
Misconfigured hosting can cause QuickBooks hosting configuration errors that trigger H505.
Step 3: Restart QuickBooks Database Server Manager
On the server computer, press Windows + R, type services.msc, and press Enter.
Locate QuickBooksDBXX (XX is your version, e.g., 30 for QB 2020).
Right-click and choose Restart.
Ensure Startup Type is set to Automatic.
This process helps with QuickBooks Database Server Manager Error H505 and ensures multi-user functionality.
Step 4: Configure Windows Firewall
Improper firewall settings may cause QuickBooks firewall issues.
Open Control Panel > System and Security > Windows Defender Firewall.
Click Allow an app or feature through Windows Firewall.
Ensure QuickBooks is allowed on both private and public networks.
If not listed, manually add QuickBooks and its ports.
For better results, temporarily disable the firewall and try accessing the file to confirm the issue.
Step 5: Verify Folder Permissions
Ensure the system hosting the company file allows access:
Right-click the folder containing your .QBW file.
Click Properties > Sharing > Advanced Sharing.
Check Share this folder.
Click Permissions and allow Full Control for all users.
Repeat on other shared folders, if needed.
Without the right permissions, QuickBooks multi-user access is denied, and you’ll get Error H505.
You May Also Visit: Quickbooks Online Journal Entry
Optional: Rename .ND File
A damaged Network Descriptor (.ND) file may be the root cause.
Go to the folder where your QuickBooks company file is stored.
Find the file named CompanyFileName.qbw.nd.
Right-click and rename it to CompanyFileName.qbw.nd.old.
Reopen QuickBooks and try again.
QuickBooks will auto-generate a new .ND file.
Additional Tips to Prevent QuickBooks Error H505
Tip | Why It Helps |
Keep QuickBooks Updated | Prevents bugs and improves connectivity |
Use Static IPs | Avoids conflicts in network access |
Schedule Database Server Manager Scans | Keeps network paths valid |
Check Firewall Settings | Ensures uninterrupted file sharing |
Avoid Public Networks | Use secure internal networks only |
When to Call QuickBooks Support
You should contact a QuickBooks H505 error support specialist if:
You still see QuickBooks can’t connect to server H505
You can’t open the company file in multi-user mode
The server is visible but not accessible
You need help configuring firewall, hosting, or permissions
Call +1(866)500-0076 to speak with a QuickBooks Desktop expert and resolve the issue in minutes.
Final Thoughts – Don’t Let Error H505 Disrupt Your Workflow
QuickBooks Error H505 is a clear sign of a network communication issue between the server and other connected systems. Whether it’s due to firewall blocking, improper hosting, or a misconfigured QuickBooks Database Server Manager, following the steps in this guide will help you resolve it quickly.
Keep your software updated, ensure proper sharing settings, and remember: if you ever feel stuck, expert help is just a phone call away. Contact +1(866)500-0076 for dedicated support with any QuickBooks multi-user error H505 or related issues.
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