# Problem previewing site in browser **URL:** \ **Category:** Elements\ **Tags:** elements\ **Created:** [October 1, 2026, 11:57pm UTC](https://forums.realmacsoftware.com/t/problem-previewing-site-in-browser/57759 "2026-10-01T23:57:51Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Laurie](https://avatars.discourse-cdn.com/v4/letter/l/13edae/32.png) [@Laurie](https://forums.realmacsoftware.com/u/Laurie)\ **Post date:** [October 1, 2026, 11:57pm UTC](https://forums.realmacsoftware.com/t/problem-previewing-site-in-browser/57759/1 "2026-10-01T23:57:51Z")
Recently, I’m unable to preview my Elements project in the browser. I receive this error “This site can’t be reached. The webpage at **[http://127.0.0.1:21/](http://127.0.0.1:21/)** might be temporarily down or it may have moved permanently to a new web address.” Why is this? I will say it began when I was trying desperately to upload edits to Hostinger and it has all been unsuccessful after many hours of tearing my hair out and chatting with their AI Agent. I’m going circles and may have messed up some publishing settings in these many attempts that were misdirected my AI. ---
**Author:** ![differentdan](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/differentdan/32/33530_2.png) [@differentdan](https://forums.realmacsoftware.com/u/differentdan)\ **Post date:** [October 2, 2026, 12:23am UTC](https://forums.realmacsoftware.com/t/problem-previewing-site-in-browser/57759/2 "2026-10-02T00:23:12Z")
Maybe because you are trying to preview using port 21 which is reserved for FTP. Try a port number between 1024 and 65535 as shown in the Advanced settings: ![web-server-port](https://europe1.discourse-cdn.com/flex005/uploads/realmacsoftware1/original/3X/8/6/86e7a0206cb9058149f81b6a2bf883c1d0c1510e.png) ---
**Author:** ![Laurie](https://avatars.discourse-cdn.com/v4/letter/l/13edae/32.png) [@Laurie](https://forums.realmacsoftware.com/u/Laurie)\ **Post date:** [October 2, 2026, 12:30am UTC](https://forums.realmacsoftware.com/t/problem-previewing-site-in-browser/57759/3 "2026-10-02T00:30:49Z")
Thank you! That worked great. 🙂 ---
**Author:** ![differentdan](https://dub1.discourse-cdn.com/flex005/user_avatar/forums.realmacsoftware.com/differentdan/32/33530_2.png) [@differentdan](https://forums.realmacsoftware.com/u/differentdan)\ **Post date:** [October 2, 2026, 12:32am UTC](https://forums.realmacsoftware.com/t/problem-previewing-site-in-browser/57759/4 "2026-10-02T00:32:06Z")
You’re welcome, us humans aren’t useless yet… 😆