# Fix QBDBMgrN Not Running on This Computer Error

The error **“QBDBMgrN not running on this computer”** usually appears when QuickBooks Desktop cannot communicate with the **QuickBooks Database Server Manager**. This issue prevents multi-user access and stops users from opening or hosting company files on a network.

For quick assistance, contact **QuickBooks Support at 866-798-4134**.

## What Does “QBDBMgrN Not Running on This Computer” Mean?

QBDBMgrN.exe is a background service that allows QuickBooks to share company files over a network. When this service is not running or is blocked, QuickBooks displays errors such as:

* *QBDBMgrN not running on this computer*
* *QuickBooks cannot access the company file*
* *Multi-user mode not working*

This issue is common in **QuickBooks Desktop Pro, Premier, Enterprise (2023–2025)**.

## Main Causes of QBDBMgrN Not Running Error

### 1. QuickBooks Database Server Manager Service Is Stopped

If the service is disabled or stopped, QuickBooks cannot host files.

### 2. Incorrect Hosting Settings

Hosting enabled on multiple systems can cause service conflicts.

### 3. Firewall or Antivirus Blocking QBDBMgrN

Security software may block QBDBMgrN.exe or required ports.

### 4. Damaged Network Descriptor (.ND) Files

Corrupt .ND files prevent QuickBooks from locating the company file.

### 5. Outdated QuickBooks Database Server Manager

Older versions may not work with updated QuickBooks files.

## How to Fix QBDBMgrN Not Running on This Computer

### Fix 1: Restart QuickBooks Database Server Manager Service

1. Press **Windows + R**, type `services.msc`
2. Find **QuickBooksDBXX** (XX = your version year)
3. Right-click → **Restart**
4. Set **Startup type** to **Automatic**

If the service fails to start, call **866-798-4134** for guided help.

### Fix 2: Check Hosting Settings

* On the **server computer**:

* Open QuickBooks → **File → Utilities**
* Select **Host Multi-User Access**

* On **workstations**:

* Ensure **Stop Hosting Multi-User Access** is selected

### Fix 3: Run QuickBooks Database Server Manager

1. Open **QuickBooks Tool Hub**
2. Select **Network Issues**
3. Click **QuickBooks Database Server Manager**
4. Scan the folder containing your company file

### Fix 4: Configure Firewall & Antivirus Settings

* Allow **QBDBMgrN.exe** through firewall
* Open QuickBooks ports (8019, 56728–56730 depending on version)
* Temporarily disable antivirus to test

### Fix 5: Rename .ND Files

1. Open the company file folder
2. Locate files ending in `.ND`
3. Right-click → **Rename** → add `.old`
4. Rescan the folder using Database Server Manager

### Fix 6: Update QuickBooks Database Server Manager

* Download and install the latest Database Server Manager version
* Restart the server and workstations

## FAQs – QBDBMgrN Not Running on This Computer

### Why is QBDBMgrN not running on my computer?

The service may be stopped, blocked by firewall, or incorrectly configured for hosting.

### Can QuickBooks work without QBDBMgrN?

Yes, but only in **single-user mode**. Multi-user access requires QBDBMgrN.

### Does this error affect company data?

No. It only affects network access, not your company file data.

### Is this issue common after Windows updates?

Yes. Windows updates can stop services or change firewall rules.

### When should I call QuickBooks support?

If the service will not start or errors continue, call **866-798-4134** for professional assistance.

## Final Thoughts

The **QBDBMgrN not running on this computer** error is a network-level issue and does not mean your data is damaged. With proper service checks, hosting settings, and firewall configuration, the problem can be resolved quickly.

For expert help and faster resolution, contact **QuickBooks Support at 866-798-4134**.

You can find more detailed insights about [QuickBooks Desktop Support](https://qbdesktop.support/) in this guide.

For a deeper understanding of [QuickBooks Sync Manager](https://qberrorlist.weebly.com/blog), check out this resource.