Hi and welcome to the Xerte community.
You can find some more info on installing Xerte online Toolkits using Xamp on the Xerte github page:
github.com/thexerteproject/xerteonlineto...erte-online-toolkits
Make sure to use the latest version with php7.x (not the one with
php8
, since it is not (yet) supported by Xerte)
www.apachefriends.org/download.html
For the rest the install should be quite straightforward following the instructions on the github page. There is an option to download the Xerte zip-file from github, but this is not the same version as on the website. To be sure to have the stable version, download from the Xerte website.
If your problem with the login session persists, please ask one of the forum admins. They can look what is happening behind the scenes.