- If there is an error inside the functions.php of your theme, this will impact all your websites in multisite mode. This is how you can easily crash many websites because of one error in one file.
- Managing the plugins is complicated. If you want to delete a plugin, it must be deactivated first in the main wordpress install. of a multisite install.
- Many plugins are not compatible with the multisite mode.
- You never know whether you are on the dashboard of the or the administration of the site belonging to the multisite.