The installer was unable to fetch metadata from the server, please check your internet connection and try again later.

[Hanzhizheng]

Any help? What is that server address?

[Debashisa-5005966]

Yeah man I too have the same exact problem.
Anyways please try this reddit and see if it solves your problem.
https://www.reddit.com/r/fabricmc/comments/u11e87/cant_seem_to_get_iris_shaders_to_even_connect_to/

[Wire-less-LAN]

I solved it by using VPN. The installer tries to GET json from https://meta.fabricmc.net/v2/versions. While I can visit the url with no problem, the installer just somehow can't. I solved it by using cmdline:
java -Dhttp.proxyHost=127.0.0.1 -Dhttp.proxyPort=7897 -Dhttps.proxyHost=127.0.0.1 -Dhttps.proxyPort=7897 -jar Iris-Installer-3.2.0.jar. (7897 is the port of my VPN server)

[kui253]

I solved it by using VPN. The installer tries to GET json from https://meta.fabricmc.net/v2/versions. While I can visit the url with no problem, the installer just somehow can't. I solved it by using cmdline: java -Dhttp.proxyHost=127.0.0.1 -Dhttp.proxyPort=7897 -Dhttps.proxyHost=127.0.0.1 -Dhttps.proxyPort=7897 -jar Iris-Installer-3.2.0.jar. (7897 is the port of my VPN server)

works！！！！！ Tks a lot.

[lzc258]

我使用VPN解决了这个问题。安装程序尝试从 https:// meta.fabricmc.net/v2/versions 获取 json。虽然我可以毫无问题地访问该网址，但安装程序却不知何故无法访问。我使用cmdline解决了它：（7897是我的VPN服务器的端口）java -Dhttp.proxyHost=127.0.0.1 -Dhttp.proxyPort=7897 -Dhttps.proxyHost=127.0.0.1 -Dhttps.proxyPort=7897 -jar Iris-Installer-3.2.0.jar.

牛逼

[ARTiMations]

I solved it by using VPN. The installer tries to GET json from https://meta.fabricmc.net/v2/versions. While I can visit the url with no problem, the installer just somehow can't. I solved it by using cmdline: java -Dhttp.proxyHost=127.0.0.1 -Dhttp.proxyPort=7897 -Dhttps.proxyHost=127.0.0.1 -Dhttps.proxyPort=7897 -jar Iris-Installer-3.2.0.jar. (7897 is the port of my VPN server)

Hi, i tried this method, but it didnt work, maybe you turned off this server? If so than can you please turn it on