Marius L. J.

Troubleshooting Mode was initially a feature introduced via the Health Check plugin, and is now available as a standalone plugin.
The most common, and reliable, means of troubleshooting a website using WordPress, is by first disabling all plugins, and using one of the default themes that come with the software. 
The best way to do this, is by the use of a staging website, but not all website hosting providers have this feature, or it may not be part of the plan you are currently on.
Troubleshooting Mode will do its best to allow a site maintainer to disable plugins, and switch themes, without affecting regular visitors to your website.

Troubleshooting

Provides a Troubleshooting Mode to help with support and debugging.

WordPress.org

Peter Westwood

Gary Pendergast

This plugin will perform a number of checks on your WordPress installation to detect common configuration errors and known issues, and also allows plugins and themes to add their own checks.
The debug section, which allows you to gather information about your WordPress and server configuration that you may easily share with support representatives for themes, plugins or on the official WordPress.org support forums.
Troubleshooting allows you to have a clean WordPress session, where all plugins are disabled, and a default theme is used, but only for your user until you disable it or log out.
The Tools section allows you to check that WordPress files have not been tampered with, that emails can be sent, and if your plugins are compatible with any PHP version updates in the future.
For a more extensive example of how to efficiently use the Health Check plugin, check out the <a href="https://make.wordpress.org/support/handbook/appendix/troubleshooting-using-the-health-check/" rel="nofollow ugc">WordPress.org support team handbook page about this plugin</a>.
Feedback is welcome both through the <a href="https://wordpress.org/support/plugin/health-check" rel="ugc">WordPress.org forums</a>, the <a href="https://github.com/WordPress/health-check" rel="nofollow ugc">GitHub project page</a>, or on <a href="https://make.wordpress.org/chat" rel="nofollow ugc">Slack</a> in either <a href="https://wordpress.slack.com/messages/forums/" rel="nofollow ugc">#forums</a> or <a href="https://wordpress.slack.com/messages/core-site-health/" rel="nofollow ugc">#core-site-health</a>.

Health Check & Troubleshooting


This is a must have tool for troubleshooting interactions between plugins etc.


Complex but Just Trouble Shoot Mode Makes it a Must Have Tool


This plugin is problematic; it created a critical issue on my site, and it is impossible to reversed to normal. It is impossible to use this plugin, so I deleted it from the server, but still, my site is in a troubleshooting mood. This plugin broke my site.


This plugin itself it a problematic


DO NOT use this on any of your Live and important sites


Indeed a disaster.


This is an essential plugin for troubleshooting plugin and theme conflicts


Great plugin

Health Check identifies common problems, and helps you troubleshoot plugin and theme conflicts.

Troubleshooting vs Health Check & Troubleshooting