> For the complete documentation index, see [llms.txt](https://docs.monolithforensics.com/monolith/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.monolithforensics.com/monolith/using-monolith/hardware-integrations/dymo-label-printers.md).

# Dymo Label Printers

Configure a DYMO label printer for Monolith and troubleshoot common printer detection issues.

Monolith supports DYMO label printers for printing evidence, storage, and other custom labels directly from the application.

Monolith communicates with the printer through the DYMO software and its local web service. Before printing from Monolith, confirm that the printer is connected, recognized by DYMO, and able to print successfully from the DYMO application.

### Install DYMO Software

The first step in configuring a DYMO printer with Monolith is to install the latest compatible version of DYMO Connect for Desktop on the computer running Monolith.

* [Download DYMO Connect for Desktop for Windows](https://www.dymo.com/online-support.html)
* [Download DYMO Connect for Desktop for macOS](https://www.dymo.com/online-support.html)

After installation:

1. Connect and power on the DYMO printer.
2. Open DYMO Connect for Desktop.
3. Confirm that the printer appears as connected or available.
4. Print a test label directly from DYMO Connect.
5. Confirm that the DYMO web service is running.
6. Open or refresh Monolith and try printing a label.

{% hint style="info" %}
After completing the printer setup, see [Print Labels](/monolith/using-monolith/settings/item-labels.md) to learn how to select a label template and print labels from Monolith.
{% endhint %}

{% hint style="info" %}
If the printer cannot print directly from DYMO Connect, resolve that connection first. Monolith cannot communicate with a printer that is not recognized by the DYMO software.
{% endhint %}

### DYMO Web Service

Monolith uses the DYMO web service to detect and communicate with the printer.

The service runs locally in the background and may appear in the Windows system tray or macOS menu bar. Its exact name may vary based on the installed DYMO software version.

If DYMO Connect can print successfully but the printer does not appear in Monolith, the web service connection is usually the best place to begin troubleshooting.

### Printer Not Detected in Monolith

Complete these steps in order if your printer works in DYMO Connect but does not appear in Monolith.

#### 1. Confirm the Printer Works in DYMO Connect

Open DYMO Connect and confirm that:

* The correct printer appears in the application
* The printer is shown as connected or available
* A test label prints successfully

If the printer does not appear or cannot print, check its power, USB or network connection, and DYMO configuration before continuing.

#### 2. Restart the DYMO Web Service

Find the DYMO service icon in the Windows system tray or macOS menu bar.

Then:

1. Open the service menu.
2. Select **Stop Service**, **Quit**, or the closest available option.
3. Wait a few seconds.
4. Restart or reopen the service.

If there is no separate start option, fully quit and reopen DYMO Connect for Desktop.

{% hint style="info" %}
The service may appear as **DYMO Connect Web Service**, **DYMO Web Service**, `DYMO.WebAPI.Mac.Host`, or a similar name depending on your operating system and DYMO software version.
{% endhint %}

#### 3. Restart the Printer

Power cycle the DYMO printer:

1. Turn off or disconnect the printer.
2. Wait several seconds.
3. Reconnect or power the printer back on.
4. Confirm that it reappears in DYMO Connect.

#### 4. Restart Monolith

Fully close and reopen Monolith, then try printing again.

If you are using Monolith in a web browser, refresh the page after restarting the DYMO web service.

#### 5. Restart the Computer

If the printer still does not appear, restart the computer. This restarts DYMO Connect, the local web service, and the printer connection together.

After restarting:

1. Open DYMO Connect.
2. Confirm that the printer is connected.
3. Confirm that the DYMO web service is running.
4. Open Monolith.
5. Try printing the label again.

### Recommended Troubleshooting Order

When Monolith cannot find the printer:

1. Confirm that the printer appears in DYMO Connect.
2. Print a test label directly from DYMO Connect.
3. Restart the DYMO web service.
4. Power cycle the printer.
5. Fully close and reopen Monolith.
6. Restart the computer.
7. Try printing from Monolith again.

If direct printing works in DYMO Connect but Monolith still cannot detect the printer, the issue commonly points to the DYMO web service connection rather than the physical printer.

### macOS Setup

After installing DYMO Connect for Desktop on macOS, confirm that `DYMO.WebAPI.Mac.Host` is running.

The service normally appears as a small DYMO icon in the menu bar at the top of the screen.

If it is not running:

1. Open the **Applications** folder.
2. Find `DYMO.WebAPI.Mac.Host`.
3. Launch the application.
4. Confirm that the DYMO icon appears in the menu bar.
5. Refresh or reopen Monolith.
6. Try printing again.

Once the service is running and the printer is connected, the DYMO printer should appear as an available printing option in Monolith.

### macOS Troubleshooting

If restarting the DYMO web service does not resolve the issue, a complete uninstall and reinstall may be needed.

A full uninstall should remove the application, supporting files, printer configuration, and DYMO certificates before the software is reinstalled.

{% hint style="warning" %}
The exact folders and files may vary depending on your macOS and DYMO software versions. Administrator access may be required to remove some files.
{% endhint %}

#### Remove the DYMO Printer

1. Open **System Settings** or **System Preferences**.
2. Select **Printers & Scanners**.
3. Select the DYMO printer.
4. Remove the printer.
5. Repeat this process for each DYMO printer shown.

#### Delete DYMO Applications and Supporting Files

Delete all DYMO applications from the **Applications** folder.

Then review the following locations and remove the listed files or folders if they are present:

* `/Library/Extensions/DYMOUsbPrinterClassDriver.kext`
* `/Library/Frameworks/DYMO`
* `/Library/LaunchAgents/com.DYMO.dls.webservice.plist`
* `/Library/LaunchDaemons/com.DYMO.pnpd.plist`
* The DYMO folder within `/Library/Printers`

Only remove files that clearly belong to DYMO.

#### Delete DYMO Certificates From Keychain

1. Open **Finder**.
2. Go to **Applications > Utilities**.
3. Open **Keychain Access**.
4. Search for `DYMO`.
5. Delete DYMO certificate items that are found.
6. Search for `localhost`.
7. Review any matching certificate.
8. If its properties show that it was issued by DYMO, delete it.

#### Reinstall DYMO Connect

After removing the printer, application files, supporting files, and certificates:

1. Restart the computer.
2. Download the latest compatible DYMO Connect software.
3. Reinstall DYMO Connect.
4. Reconnect the printer.
5. Confirm that the printer appears in DYMO Connect.
6. Print a test label.
7. Confirm that `DYMO.WebAPI.Mac.Host` is running.
8. Open Monolith and try printing again.

### Contact Support

If Monolith still cannot detect the printer, contact <support@monolithforensics.com> and include:

* Your operating system
* Your DYMO printer model
* Your installed DYMO software version
* Whether you are using the Monolith web or desktop application
* Whether the printer appears in DYMO Connect
* Whether a test label prints successfully from DYMO Connect
* Whether the DYMO web service is running
* Any error messages or screenshots