---
# System prepended metadata

title: QuickBooks Database Server Manager Not Working – Fix QBDBMgrN Error Guide
tags: [QuickBooks Database Server Manager not working, QBDBMgrN not running, QuickBooks server manager error, QuickBooks database server troubleshooting, QuickBooks multi user mode fix]

---

# QuickBooks Database Server Manager Not Working: Complete Troubleshooting Guide (2026)

QuickBooks Desktop is widely used by businesses to manage accounting, payroll, and financial data. When multiple users need to access the same company file simultaneously, **QuickBooks Database Server Manager (QBDSM)** plays a crucial role. It enables the **multi-user mode** that allows several workstations to connect to a shared company file stored on a server.

However, many QuickBooks users encounter issues where the **QuickBooks Database Server Manager is not working**, not running, or unable to scan company files. When this happens, users may face errors such as **H202, H505, or QBDBMgrN not running**, preventing access to the company file.

This comprehensive guide explains **why the QuickBooks Database Server Manager stops working and how to fix it step-by-step**. If you need immediate assistance with troubleshooting, you can also contact QuickBooks experts at **1-888-493-2290** for guidance.

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![Certified-QuickBooks-ProAdvisor-banner](https://hackmd.io/_uploads/Hkxy_1PKbe.jpg)


# What is QuickBooks Database Server Manager?

QuickBooks Database Server Manager is a utility that allows multiple users to access a **QuickBooks company file stored on a server**. It manages the network connection between QuickBooks workstations and the server hosting the company file.

Its primary functions include:

* Enabling **multi-user access**
* Managing **network connections**
* Creating **Network Data (.ND) files**
* Monitoring database services
* Scanning folders that contain QuickBooks company files

Without this tool running properly, QuickBooks cannot host company files for other users on the network. ([quickbooks-intuithelp.nicepage.io][1])

---

# Signs That QuickBooks Database Server Manager Is Not Working

When this tool stops functioning properly, several symptoms may appear.

Common signs include:

### 1. Multi-User Mode Not Working

Users cannot switch to multi-user mode and receive errors like:

* H202
* H505
* H303

### 2. Error Message: QBDBMgrN Not Running

QuickBooks displays:

**“QBDBMgrN not running on this computer.”**

### 3. Company File Cannot Be Accessed

Workstations cannot open the company file stored on the server.

### 4. Database Server Manager Cannot Scan Folders

The scan process fails when attempting to locate company files.

### 5. Frequent Disconnections

Users are repeatedly disconnected from the QuickBooks server.

These problems occur because QuickBooks cannot communicate with the server hosting the company file.

---

# Why QuickBooks Database Server Manager Stops Working

Understanding the root causes helps resolve the issue faster.

Here are the most common reasons the Database Server Manager stops working.

## 1. QuickBooks Database Service Not Running

The QuickBooks Database Server Manager relies on the **QuickBooksDBXX service**. If this service stops running, the system cannot host company files. ([qbsenterprisesupport.com][2])

## 2. Firewall or Antivirus Blocking QuickBooks

Security programs sometimes block QuickBooks network ports, preventing communication between workstations and the server. ([HackMD][3])

## 3. Damaged or Missing Network Data Files (.ND)

QuickBooks creates **.ND files** to identify the location of company files on the network. If these files are damaged, QuickBooks cannot connect to the server. ([quickbooks-intuithelp.nicepage.io][1])

## 4. Outdated QuickBooks Version

Running outdated versions of QuickBooks Desktop or Windows can cause compatibility issues that affect the database server.

## 5. Incorrect Folder Permissions

If the shared folder does not have the correct read/write permissions, QuickBooks users cannot access the company file.

## 6. Corrupted QuickBooks Installation

Incomplete or damaged QuickBooks installations may cause database server manager failures. ([reconcilebooks.com][4])

## 7. Network Configuration Problems

Improper hosting settings or network misconfigurations can block QuickBooks connections.

---

# How to Fix QuickBooks Database Server Manager Not Working

Below are the most effective troubleshooting solutions.

---

# Solution 1: Restart QuickBooks Database Services

Restarting the database services often resolves the issue quickly.

### Steps:

1. Press **Windows + R**
2. Type **services.msc**
3. Press **Enter**
4. Locate the following services:

   * **QuickBooksDBXX**
   * **QBCFMonitorService**
5. Right-click each service
6. Select **Restart**
7. Set the **Startup Type to Automatic**

Restarting these services often restores QuickBooks network connectivity. ([HackMD][3])

---

# Solution 2: Use QuickBooks Tool Hub

QuickBooks Tool Hub contains built-in tools designed to fix network and database issues.

### Steps:

1. Download the **QuickBooks Tool Hub**
2. Install and open it
3. Click **Network Issues**
4. Select **QuickBooks Database Server Manager**
5. Run a **Scan for company files**

The scan recreates network configuration files and resolves database connection issues.

---

# Solution 3: Configure Firewall Settings

Firewall settings are one of the most common causes of QuickBooks network issues.

QuickBooks requires certain ports to communicate between computers.

Common ports include:

* 8019
* 56728
* Dynamic ports depending on the QuickBooks version

To fix this issue:

1. Open **Windows Defender Firewall**
2. Go to **Advanced Settings**
3. Add inbound and outbound rules
4. Allow QuickBooks ports

This allows QuickBooks Database Server Manager to communicate properly across the network.

---

# Solution 4: Rename .ND and .TLG Files

Damaged configuration files can prevent QuickBooks from connecting to the server.

Renaming these files forces QuickBooks to create new ones.

### Steps:

1. Locate your company file folder
2. Find files with extensions:

   * **.ND**
   * **.TLG**
3. Right-click each file
4. Select **Rename**
5. Add **.OLD** at the end

Example:

```
CompanyFile.qbw.nd → CompanyFile.qbw.nd.old
CompanyFile.qbw.tlg → CompanyFile.qbw.tlg.old
```

Restart QuickBooks and rescan the company file folder.

---

# Solution 5: Run QuickBooks File Doctor

QuickBooks File Doctor is designed to repair:

* Network connectivity issues
* Company file damage
* Database server errors

### Steps:

1. Open **QuickBooks Tool Hub**
2. Select **Company File Issues**
3. Click **Run QuickBooks File Doctor**
4. Select your company file
5. Start the scan

The tool automatically repairs many common QuickBooks issues.

---

# Solution 6: Check Hosting Settings

Only the server computer should host the company file.

### On the Server

1. Open QuickBooks
2. Click **File**
3. Select **Utilities**
4. Ensure **Host Multi-User Access** is enabled

### On Workstations

The option should display:

**Stop Hosting Multi-User Access**

This means hosting is disabled on workstations.

---

# Solution 7: Reinstall QuickBooks Database Server Manager

If the tool becomes corrupted, reinstalling it can resolve the issue.

### Steps:

1. Open **Control Panel**
2. Select **Programs and Features**
3. Uninstall **QuickBooks Database Server Manager**
4. Restart the computer
5. Reinstall the latest version

Make sure the version matches the QuickBooks Desktop version installed.

---

# Solution 8: Update QuickBooks and Windows

Using outdated software can create compatibility issues.

Update both:

* QuickBooks Desktop
* Windows operating system

After updating, restart the computer and try launching the Database Server Manager again.

---

# Solution 9: Verify Folder Permissions

Incorrect permissions can prevent QuickBooks from accessing the company file.

### Steps:

1. Right-click the folder containing the company file
2. Select **Properties**
3. Click **Security**
4. Ensure **Full Control** is enabled for QuickBooks users

This allows QuickBooks to create network configuration files.

---

# Solution 10: Scan Company File Folder Again

Scanning folders allows QuickBooks to detect and configure shared company files.

### Steps:

1. Open **QuickBooks Database Server Manager**
2. Go to **Scan Folders**
3. Click **Add Folder**
4. Select the company file location
5. Click **Start Scan**

Once the scan is complete, QuickBooks will generate new network files.

---

# Preventing QuickBooks Database Server Manager Errors

Preventive measures help avoid database server issues in the future.

### 1. Keep QuickBooks Updated

Install QuickBooks updates regularly to maintain compatibility.

### 2. Maintain Firewall Exceptions

Ensure firewall rules always allow QuickBooks network ports.

### 3. Perform Regular File Maintenance

Use tools like:

* Verify Data
* Rebuild Data

### 4. Use Reliable Network Infrastructure

Weak or unstable networks can disrupt QuickBooks connections.

### 5. Back Up Company Files Regularly

Backup protects data if server issues occur.

---

# When to Contact QuickBooks Experts

Sometimes QuickBooks server problems require professional troubleshooting.

You should seek assistance if:

* Database Server Manager keeps crashing
* Multi-user mode still fails
* Company files cannot be accessed
* Error codes continue appearing

For professional guidance, contact QuickBooks support specialists at **1-888-493-2290**.

Experts can help diagnose server issues, repair corrupted files, and restore network connectivity quickly.

---

# Frequently Asked Questions (FAQs)

## Why does QuickBooks Database Server Manager keep stopping?

This usually happens due to firewall restrictions, damaged installation files, or stopped QuickBooks database services.

## Can QuickBooks run without Database Server Manager?

Yes, but only in **single-user mode**. Multi-user access requires the Database Server Manager.

## What does QBDBMgrN mean?

QBDBMgrN refers to the **QuickBooks Database Manager service** responsible for hosting company files on a server.

## How do I check if QuickBooks Database Server Manager is running?

Open **Windows Services (services.msc)** and verify that the **QuickBooksDBXX service is running**.

## How do I fix QuickBooks H202 error?

Restart the database server services, configure firewall ports, and scan company file folders using the Database Server Manager.

---

# Final Thoughts

The **QuickBooks Database Server Manager Not Working** error can disrupt business operations, especially for companies relying on multi-user access. Fortunately, most issues can be resolved through simple troubleshooting steps such as restarting services, repairing network configuration files, updating QuickBooks, and adjusting firewall settings.

By understanding the root causes and applying the solutions discussed in this guide, QuickBooks users can quickly restore their accounting system and resume normal operations.

If troubleshooting becomes complicated or you need expert assistance, you can always contact QuickBooks specialists at **1-888-493-2290** for step-by-step guidance.