How to remove pre-installed extensions on Joomla
Normally to remove an extension you would go to:
- J4: System > Extension > Manage
- J3: Extensions > Manage > Manage

However, you cannot remove the extensions that come with Joomla at installation. When trying to remove these extensions (for example, Banners) you will receive the error:
The extension "com_banners" is locked and cannot be uninstalled.
By default, these extensions are protected and you cannot delete them. In this article, I will show you how to remove it.
Important: I do not recommend removing these extensions, as some of them may affect your website. Before doing anything, you should back up your website first.
Protected extensions include:
- Banners
- Contacts
- Media
- Private Messages
- News Feeds
- Content
- Privacy
There will be some extensions I don't list here because of their importance. Your site may not work if you delete it =)).
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First, you need to access the site's database (using your hosting's phpMyAdmin or a 3rd party application).
Next, you go to the table [PREFIX]_extensions ([PREFIX] is the prefix of the table when you set it up).
Here, you find the "locked" and "protected" columns of the table, which will have the value 0 or 1. If an extension is set to 1, you will not be able to delete it.

Next, find the name of the extension you need to delete (in the list above), change the value of the "locked" and "protected" columns from 1 to 0. In case the value of the "protected" column is 0, then you keep it.
Now, you can delete these extensions as usual.
I have been googling how to change the menu colours, as the black text on my purple background is not very readable. However everything I have tried to change the text colour of the Off-Canvas main menu text to white did not work.
Would you know what custom CSS I would need to change all menu items to white text (including submenus).
Probably need background colour to not be white when hovering over submenus
Any help you can provide would be gratefully appreciated (or a pointer to some useful help).
Thank you
see
https://siteupdate.vedicmaths.org/index.php
InPre-Update Check for Joomla 5.4.4
for Off-Canvas it says
Joomla cannot detect the extension's compatibility with the target version of Joomla.
have you implemented the compatibility stuff for Joomla to upgrade extensions correctly ?
Have got two off canvas menus working (1. for tools and 2. for main menu)
However I can only get the Main menu to display the first level of menu items.
Have you any suggestions for getting the sub menu items to display ?
N.B. the menu item with sub menu items does display a down arrow, but trying to click on it only display the item at the main menu level.
see
https://siteupdate.vedicmaths.org/index.php
If you want to see where I have currently got to
What is wrong?
That imported page keeps on saying this, but nothing further is happening...