Hi, I ran into an issue couple weeks ago. My ampps update failed and resulting in the reinstallation of ampps. Before that failed update, i already had a joomla pakage installed in one domain and it was managing any update from joomla.
Since i reinstalled ampps, i had to recreate my domains and other things but didn't wanted to reinstall joomla over my existing website. I would like to manually add it in the current installations of the joomla script window so that future joomla script update could be applied to my existing website.