Hi! I would love to use (and be able to recommend) MailWizz. But I'm stuck at install. My Windows 2008 R2 server has a mature execution environment which is running XenForo (like this forum, at https://sqrl.grc.com) and EasyForms (another PHP-based app from Envato), Wordpress (at https://blog.grc.com), WikiTiki (not currently public)... all without any problems. But when attempting to install MailWizz I'm unable to get past the install "Welcome" screen. I tried updating my license HERE at MailWizz and it was accepted. If I deliberately mess-up the license code, the incorrect license is detected and I'm told to go over to Envato to check it. So my correct license is apparently being accepted. My server's log shows these four entries: 2020-01-13 20:02:34 10.0.1.57 GET /install/index.php - 80 - 200 0 0 31 2020-01-13 20:03:10 10.0.1.57 POST /install/index.php - 80 - 302 0 0 826 2020-01-13 20:03:10 10.0.1.57 GET /install/index.php route=requirements 80 - 302 0 0 78 2020-01-13 20:03:10 10.0.1.57 GET /install/index.php route=welcome 80 - 200 0 0 15 The first "GET" entry is my manual entry to begin the process. The second "POST" is my submission of the license and acceptance of the terms and conditions. We can see that the POST returns a 302 Redirect to "route=requirements" which then, in turn, 302 Redirects us back to route=welcome. There are reports of some users getting MailWizz running under Windows, so I was encouraged. If MailWizz's use under Windows is completely unsupported due to its clearly-stated need for Linux, then so be it. Let me know that you have no interest in helping -- despite the fact that I have built a highly PHP-friendly environment -- and I'll go away and find some other solution. But... if you have anything to suggest and/or are interested in working with me, I'll be glad to jump through hoops at this end.