Just FYI, the backup tool that 3CX installs does a very poor job of backing up 3CX. It will not backup your custom phone templates, customized system prompts, or any .xml files you might have modified. Instead, it overwrite them with the default files from the install. If you've made changes to any of these files, as I have, you will want to back them up manually in case you need to reinstall. Personally, I stop all of the 3CX services on the computer and make a copy of the \ProgramData\3CX\ folder and all of it's contents.