TYPO3

The Install Tool is locked

To enable the Install Tool, the file ENABLE_INSTALL_TOOL must be created.

• In the typo3conf/ folder, create a file named ENABLE_INSTALL_TOOL. The file name is case sensitive, but the file itself can simply be an empty file.
• Alternatively, in the Backend, go to Admin tools > Install and let TYPO3 create this file for you.
  You are recommended to log out from the Install Tool after finishing your work. The file will then automatically be deleted.

For security reasons, it is highly recommended that you either rename or delete the file after the operation is finished.

As an additional security measure, if the file is older than one hour, TYPO3 will automatically delete it. The file must be writable by the web server user.