> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/support-us/network-configurations-and-errors/network-troubleshooting.md).

# Network Troubleshooting

This section includes information about different network errors and how to solve for them.

{% hint style="info" %}
**Use this when** a device shows a network, communication, or connection error and you need a starting point for troubleshooting.
{% endhint %}

## Symptoms

* A network, communication, or connection error on the device

## Resolve the issue

{% stepper %}
{% step %}

### Check the internet service

Verify the site has an internet connection. Without one, devices can fail to install or process transactions.

✅ **Issue fixed — stop here.** ❌ **Still not working — continue to the next step.**
{% endstep %}

{% step %}

### Check the hardware connection

Verify all peripherals connected to the device are securely plugged in. Re-seat anything loose.

✅ **Issue fixed — stop here.** ❌ **Still not working — continue to the next step.**
{% endstep %}

{% step %}

### Check the network configuration

Verify all required network details are set correctly — IP Address, Subnet Mask, Gateway, DNS1, and DNS2. If any are incorrect, adjust them using the correct values from your Level 1 Helpdesk, Merchant Services Provider, or Verifone.

✅ **Issue fixed — stop here.** ❌ **Still not working — continue to escalation below.**
{% endstep %}
{% endstepper %}

## Seeing a specific error?

{% hint style="info" %}
If the device is showing "Comm Error" or "Communication Error" specifically, see [Comm Error](/support-us/network-configurations-and-errors/network-troubleshooting/comm-error.md) for targeted troubleshooting.
{% endhint %}

## Still not working? Contact the Helpdesk

{% hint style="info" %}
**Need assistance? Contact Verifone Helpdesk at any time.**

* Use our Chat platform
* Or call 1.800.VERIFONE (837.4366)
  {% endhint %}

<details>

<summary>Keywords</summary>

Also called: general network troubleshooting, connection error, communication error. Search terms: network troubleshooting, connection error.

</details>


---

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