I did something wrong with my joomla based page. When I go to /administration/ I have only message:

There are important post-installation messages that require your attention. To view those messages please click on the Review Messages button below.

You can review the messages at any time by clicking on the Components, Post-installation messages menu item of your site's Administrator section. This information area won't appear when you have hidden all messages.

And no more any buttons and menus. How to get back administration environment?

  • This message occour after install some component, module or plugin? If yes, you can access your database and "disable" last installed in table #_extensions change enable colum to 0.
    – Max
    Commented Aug 31, 2015 at 16:11

2 Answers 2


1) Create and download a backup: www.ostraining.com/blog/joomla/test-site-akeeba-backup/

2) Fix your folder and file permission using Ad min Tools: https://www.ostraining.com/blog/joomla/admin-tools-the-quick-and-easy-way-to-change-folder-and-file-permissions/

3) Download an update for your Joomla version: https://github.com/joomla/joomla-cms/releases

then install it from Extensions >> Extension Manager , as you would an extension.

4) Go to Extensions >> Extension Manager >> Database >> Fix

That should reset all your core files to 3.4.1 as well as your database.

5) Clear your browser's cache as well as your site cache.


Or simple run the sql

UPDATE #__assets SET rules = '{"core.login.site":{"6":1,"2":1},"core.login.admin":{"6":1},"core.login.offline":{"6":1},"core.admin":{"8":1},"core.manage":{"7":1},"core.create":{"6":1,"3":1},"core.delete":{"6":1},"core.edit":{"6":1,"4":1},"core.edit.state":{"6":1,"5":1},"core.edit.own":{"6":1,"3":1}}' WHERE id = 1

It will reset you core permissions

Oh, and if this will not help - check if your Super Users group have id = 8 - it's default at #__usergroups

And you may also check if your user in this user group by checking #__user_usergroup_map table. Columns names speak for them selves.

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