---
title: "Chromium Browser does not open in the NavVis VLX Ubuntu UI"
slug: "chromium-browser-does-not-open"
description: "Chromium browser loads then does nothing in the NavVis VLX and NavVis M6 Ubuntu UI. Fix by deleting /home/mapper/.config/chromium. Terminal error: 'Failed to create a ProcessSingleton for your profile directory'."
tags: ["Error message", "Troubleshooting"]
updated: 2026-04-15T12:42:04Z
published: 2026-04-15T12:42:04Z
canonical: "knowledge.navvis.com/chromium-browser-does-not-open"
---

> ## 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.

# Chromium browser does not open in the Ubuntu UI

## Introduction

### Problem description

When clicking on the icon for the Chromium/Chrome browser in the Ubuntu UI, the browser seems to be loading for a bit, but then nothing happens.

When opening via a terminal via

```plaintext
chromium-browser
```

you get the following error message:

```plaintext
ERROR: disk_cache.cc(184) Unable to create cache
ERROR:process_sigleton_posix.cc(403) readlink failed: Permission denied (13)
...
ERROR:chrome_browser_main.cc(1253) Failed to create a ProcessSingleton for your profile directory. 
This means that running multiple instances would start multiple browser processes rather than opening a new window in the existing process. 
Aborting now to avoid profile corruption.
```

### Scope

Solution applies to: all NavVis VLX and NavVis M6 system software

## Troubleshooting procedure

Delete the previously saved chromium config by running the following in a terminal:

```plaintext
sudo rm -rf /home/mapper/.config/chromium
```

User Interface