Maybe your WordPress Blog or Website got hacked or you messed up and you need to install All your installed WordPress plugins. Doing this manually can be a daunting task, hence reason you are looking for a way to automatically install/re-install all at once.

I was able to do so on one of my blogs today.

First I installed the
Sucuri Security plugin for free from WordPress repository

After you have installed this plugin, go to its settings , you will see it on the admin vertical bar.

Once you select Post Hack, you will be taken to a table containing a list of your plugins, simply select all and submit, the plugin will attempt to get the latest version of the plugins selected from the WordPress Repository

Note: If you use Plugins that require some form of manual configuration for it to work on your site or for your site to work, this process might break your site, just keep that at the back of your mind. Nonetheless, this process will work smoothly all things been equal. Also the process would not upload your premium plugins.

If you have other tested ways of achieving this , please indicate in the comment section, if you need additional help with this, you can also share it in the comment section.