Site Restoration

#40351 Error after restore backup Joomla 5 to 4

Posted in ‘Site restoration’
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Environment Information

PHP version
CMS Type
CMS Version
Backup Tool Version
Akeeba Professional 9.8.5
Kickstart version

Latest post by Rovaha on Sunday, 25 February 2024 07:14 CST


After upgrade J4 to 5 I restored the site using the standard Backup feature in Akeeba Backup. Result in error.

Akeeba Staff

As noted in the documentation:

Do not try to overwrite one Joomla! version family with a different one. Overwriting a major version with another (e.g. restoring a backup taken on Joomla! 3.7 on top of a site running Joomla! 2.5 or vice versa) or between different minor versions (e.g. restoring a backup taken on Joomla! 3.7 on top of a site running Joomla! 3.6 or vice versa) will NOT work. Joomla! moves files around between minor and major versions. Since the backup does not delete files not present in the backup archive this will end up with Joomla! being "confused" and malfunctioning. In these cases you should delete the existing files and folders (except, perhaps, user generated content) before restoring the backup. You can safely restore a sub-minor (path-level) version on top of another. For example, you can safely restore a Joomla! 3.7.5 site on top of a Joomla! 3.7.3 site or vice versa.

Make sure you have a copy of all your backup archive files somewhere safe on your own computer (and, ideally, on a flash drive not connected to your computer, just in case your finger slips or something). Delete the files and folders under your site's root. Then place kicsktart.php and the backup archive file(s) in your site's root. Run Kickstart and proceed with the restoration.

Nicholas K. Dionysopoulos

Lead Developer and Director

🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!


Thanks for your swift reply. I shall restore the site asap.

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