---
title: "Navgraph setup problem troubleshooting"
slug: "navgraph-setup-problem-troubleshooting"
description: "Navgraph routing fails when nodes are disconnected, differ in height by more than 2 meters so floors split, or are too scarce to reach a POI. Reconnect nodes, keep heights within 1 meter, add triangle-link meshes."
tags: ["Troubleshooting", "Navgraph Issues", "Node Connectivity", "Navigation Troubleshooting"]
updated: 2026-08-18T14:19:53Z
published: 2026-08-18T14:19:53Z
canonical: "knowledge.navvis.com/navgraph-setup-problem-troubleshooting"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://knowledge.navvis.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Navgraph setup problem troubleshooting

## Issue description

The Navgraph doesn’t allow you to navigate from the start point to the destination, or the Routing is not correct.

## Troubleshooting procedure

### Checks

Check your Navgraph and see if any of the following situations happen:

There are nodes not properly connected. They may look like connected on a normal 2D view, but when you zoom in such as the example shown here, they are actually not connected. ![](https://cdn.document360.io/bf174766-fa1a-4fe1-a4d7-b1db1e7cb996/Images/Documentation/image-8J4F67U9.png?sv=2026-02-06&spr=https&st=2026-11-15T15%3A07%3A38Z&se=2026-11-15T16%3A07%3A38Z&sr=c&sp=r&sig=kOmoodCTaFRJSC3Yk4Y%2BqDOP8wdFn3N3kMPxOkuWpF0%3D)

Some nodes are much higher than the others. They typically have a discrepancy of more than 2 meters, and the software separates them into two floors.

![screen2(2)](https://cdn.document360.io/bf174766-fa1a-4fe1-a4d7-b1db1e7cb996/Images/Documentation/screen2(2).png?sv=2026-02-06&spr=https&st=2026-11-15T15%3A07%3A38Z&se=2026-11-15T16%3A07%3A38Z&sr=c&sp=r&sig=kOmoodCTaFRJSC3Yk4Y%2BqDOP8wdFn3N3kMPxOkuWpF0%3D)

In some parts the nodes are too scarce, you won't be able to navigate to a POI that is too far away from the nearest node.

### Corrections

For the above three possible causes, you can correct each one of them as follows:

- Zoom in and properly connect each disconnected part.
- Adjust the height of the nodes on the same floor to closer values, better within 1 meter.
- Draw more nodes to increase the coverage, the best practice would be to create “meshes“, with triangle links.

![screen3(2)](https://cdn.document360.io/bf174766-fa1a-4fe1-a4d7-b1db1e7cb996/Images/Documentation/screen3(2).png?sv=2026-02-06&spr=https&st=2026-11-15T15%3A07%3A38Z&se=2026-11-15T16%3A07%3A38Z&sr=c&sp=r&sig=kOmoodCTaFRJSC3Yk4Y%2BqDOP8wdFn3N3kMPxOkuWpF0%3D)

Wayfinding between any two locations in NavVis IVION. Requires a fully-connected navigation graph.

Point Of Interest