Failed to download version manifest, can not find server jar URL

[Humus124]

im trying to run a modpack but i cant a install forge server:

JVM info: Oracle Corporation - 20.0.1 - 20.0.1+9-29
java.net.preferIPv4Stack=true
Found java version 20.0.1
Extracting main jar:
  Extracted successfully
Considering minecraft server jar
java.net.SocketTimeoutException: Connect timed out
    at java.base/sun.nio.ch.NioSocketImpl.timedFinishConnect(NioSocketImpl.java:539)
    at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:585)
    at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327)
    at java.base/java.net.Socket.connect(Socket.java:666)
    at java.base/sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:304)
    at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:178)
    at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:532)
    at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:637)
    at java.base/sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264)
    at java.base/sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:378)
    at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:193)
    at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1241)
    at java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1127)
    at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:179)
    at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1657)
    at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1581)
    at java.base/java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:529)
    at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:308)
    at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:243)
    at net.minecraftforge.installer.DownloadUtils.downloadManifest(DownloadUtils.java:307)
    at net.minecraftforge.installer.json.Util.getVanillaVersion(Util.java:73)
    at net.minecraftforge.installer.actions.ServerInstall.run(ServerInstall.java:86)
    at net.minecraftforge.installer.InstallerPanel.run(InstallerPanel.java:423)
    at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:175)
    at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:147)
Failed to download version manifest, can not find server jar URL.
 

Edited May 16, 2023 by Humus124

[ChampionAsh5357]

First, your Java version is incorrect. It should be Java 17 for 1.18+, Java 16 for 1.17, and Java 8 for 1.12.2-1.16.5.

Second, in order to root out one of the more common issues, we'll need to see your hosts file. Here's the steps to getting this file.

1) Press the Win + R key on your keyboard.

2) Paste the following into the prompt that opens: 'notepad %windir%\system32\drivers\etc\hosts'

3) Use Ctrl+A to select everything in the file, then Ctrl+C into the textbox to post to this thread.

[Humus124]

# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a '#' symbol.
#
# For example:
#
#      102.54.94.97     rhino.acme.com          # source server
#       38.25.63.10     x.acme.com              # x client host
# localhost name resolution is handled within DNS itself.
#    127.0.0.1       localhost
#    ::1             localhost
109.94.209.70      fitgirlrepacks.co               # Fake FitGirl site
109.94.209.70      fitgirl-repacks.cc              # Fake FitGirl site
109.94.209.70      fitgirl-repack.com              # Fake FitGirl site
109.94.209.70      fitgirl-repacks.website         # Fake FitGirl site
109.94.209.70      www.fitgirlrepacks.co           # Fake FitGirl site
109.94.209.70      www.fitgirl-repacks.cc          # Fake FitGirl site
109.94.209.70      www.fitgirl-repack.com          # Fake FitGirl site
109.94.209.70      www.fitgirl-repacks.website     # Fake FitGirl site
109.94.209.70      ww9.fitgirl-repacks.xyz         # Fake FitGirl site
109.94.209.70      *.fitgirl-repacks.xyz           # Fake FitGirl site
109.94.209.70      fitgirl-repacks.xyz             # Fake FitGirl site
109.94.209.70      fitgirl-repack.net              # Fake FitGirl site
109.94.209.70      www.fitgirl-repack.net          # Fake FitGirl site
109.94.209.70      fitgirlpack.site                # Fake FitGirl site
109.94.209.70      www.fitgirlpack.site            # Fake FitGirl site
 
0.0.0.0 activation.easeus.com 
0.0.0.0 track.easeus.com 
0.0.0.0 easeus.com 
0.0.0.0 update.easeus.com 

134.209.132.125 authserver.mojang.com
134.209.132.125 sessionserver.mojang.com
134.209.132.125 launchermeta.mojang.com