---
title: "Access Modes | GTX Getting Started"
slug: "access-modes"
description: "Learn about Access Modes in Marlin GTX trusted automotive software by Megabus."
updated: 2026-08-04T05:23:38Z
published: 2026-08-04T05:23:38Z
canonical: "help.megabus.com.au/access-modes"
---

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

# Access Modes

**{{variable.GTX Bold}}** shows different access modes on the Login window, advising whether the system is operational or restricted.

<ss title="GTX Login window access mode indicator" alt="GTX Login window access mode indicator">![Image](https://cdn.document360.io/d7282b31-60c4-41e6-bf87-3f684d4da049/Images/Documentation/image-5E7M3QL1.png)</ss>

The system's current access mode is displayed on the GTX Login window, above where you enter your password.

## Active

**Active** is the normal mode for an operational GTX system; all functions should be available.

## Read Only

If the Access Mode is **Read Only**, you will be able to view and perform queries on the data but not enter any new transactions.

**This normally occurs:**
* In **run down systems** (after a company change-over, owners can specify a number of months during which they can enter transactions to finalise the business, before GTX goes into Read Only mode)
* In datasets from **[previous years](/gtx/docs/previous-year-icons)** (opened using different icons or Start menu entries than your main/current GTX system)

### Single Computer Read Only

A Read Only access mode on only a **single computer** is likely due to someone accidentally setting the date incorrectly on that computer.

**If the date is incorrect:**
* **Reset it** to the correct date
* **Restart GTX** on that computer

If it is still in Read Only mode, please [contact the Megabus Support team](/gtx/docs/log-a-support-ticket).

### All Computers Read Only

**If GTX is in Read Only mode on all computers:**
* **Reset the date on the master PC**, if incorrect.
* Check the **License Expiry Date** and [contact Megabus](https://www.megabus.com.au/support) if expired
* Check that **[Megalink](/gtx/docs/access-modes#megalink-activation-code-required)** is running on the master PC (User 1) (see below)

### Megalink Activation Code Required

If [Megalink](/gtx/docs/megalink) has not been active for **30 days**, GTX will go into Read Only mode on all computers until it is restarted or Megabus provides an Activation Code.

<ss title="Megalink status indicator showing red icon" alt="Megalink status indicator showing red icon">![Image](https://cdn.document360.io/d7282b31-60c4-41e6-bf87-3f684d4da049/Images/Documentation/image-DW30MPIP.png)</ss>

If Megalink is not running, the **Megalink status tab** at the bottom right of the GTX window **will be red**.

**To restart Megalink:**
* **Double-click** on the Megalink icon on the Windows desktop on the Master PC (User 1)
* Enter the **password**

Within a minute or so, the Megalink indicator should **become grey**, as usual, and GTX will return to [active](/gtx/docs/access-modes#active) mode.

If not, please [contact the Megabus Support team](/gtx/docs/log-a-support-ticket).