---
title: "Important: #107536 - Install Tool now adapts to backend login routing"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:important-107536-1718204204"
source: "Changelog/14.0/Important-107536-InstallToolNowAdaptsToBackendLoginRouting.rst"
typo3-version: "14.0"
typo3-major: 14
type: "important"
issue: 107536
forge: "https://forge.typo3.org/issues/107536"
tags: ["Backend", "Install", "ext:install"]
rendered: "2026-09-20T18:31:11+00:00"
---

# Important: #107536 - Install Tool now adapts to backend login routing {#important-107536-1718204204}

See [forge#107536](https://forge.typo3.org/issues/107536)

## Description {#description}

The Install Tool now integrates with TYPO3's backend routing system instead of
using a separate `typo3/install.php` file. This modernization improves
consistency while maintaining full backward compatibility.

If the TYPO3 installation is not working properly, the Install Tool can now be
accessed via the `?__typo3_install` parameter, ensuring administrators can rely
on it for system maintenance and recovery.

## Impact {#impact}

**For Administrators:**

All existing workflows continue to work without changes. However, the Install
Tool is now accessible via:

-   The `__typo3_install` parameter (for example, `https://example.com/?__typo3_install`)
-   Backend routes such as `/typo3/install` and `/typo3/install.php` still work.
    If the `$GLOBALS['TYPO3_CONF_VARS']['BE']['entryPoint']` is set, the
    Install Tool adapts accordingly.

**System Recovery:**

When the TYPO3 installation is not set up or not working properly, the magic
`__typo3_install` parameter still redirects to the installer or maintenance tool
as before, ensuring administrators can always access system recovery tools.

**Technical Benefits:**

The Install Tool now uses the same routing infrastructure as the rest of the
TYPO3 backend, creating a more unified and maintainable architecture while
supporting the long-term goal of simplifying TYPO3's directory structure.

## Migration {#migration}

No migration is required. All existing documentation, scripts, and workflows
using the Install Tool continue to function without modification.