Server environment requirements

In order to work, Akeeba Backup requires the following server software environment:

  • Joomla!™ and PHP version compatibilities are detailed in our Compatibility page.

  • MySQL 5.0.42 or later. MySQL 5.6 or later recommended. MySQL 4.x is not supported.

  • Minimum 24Mb of PHP memory_limit (sufficient only for smaller web sites, without many plug-ins and modules running). More is better. 32Mb to 64Mb recommended for optimal performance on large sites. 128Mb is recommended for sites containing deep-nested directories with thousands of files.

    Even though Akeeba Backup may run on servers with a smaller memory limit, it is unlikely that it will ever finish the backup process.

    Enough available free space or quota limit to store your backup archives.

  • The cURL PHP module must be installed for FTP and cloud uploads to work.

As far as the browser is concerned, you can use any modern version (i.e. published within the last year) of Microsoft Edge, Safari, Opera, Firefox or Google Chrome. We no longer support Internet Explorer; our software will display incorrectly or not work at all on this old, buggy and obsolete browser.

In any case, you must make sure that Javascript is enabled on your browser for the backup to work. If you are using AVG antivirus, please disable its Link Checker feature (and reboot your computer) as it is known to cause problems with several Javascript-based web applications, including Akeeba Backup and its tools.

You are very strongly advised to disable Internet firewalls, antivirus applications and browser extensions which interfere with the site's loading such as script blockers (such as NoScript) and ad blockers (such as AdBlockPlus) only for the domains you are backing up from and restoring to. Remember that these applications and browser extensions are designed to protect you against third party sites. As a result they are very aggressive and WILL break your own sites. We can't do anything about it: your computer and your browser are under your control alone.