Am currently running on java 8 update 371, 1.18.2 and am trying to install forge 4.0.29 which is the latest version. i tried to install the recommended one but this show an error which is clearly in the title.  i already have the server installed in my Minecraft and whenever i install forge this always shows in the error "Failed to download version manifest, cannot find client jar URL." Please help me fix this issue also this is the installer log just incase 

 

JVM info: Oracle Corporation - 20.0.1 - 20.0.1+9-29
java.net.preferIPv4Stack=true
Found java version 20.0.1
Extracting json
Considering minecraft client jar
javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at java.base/sun.security.ssl.Alert.createSSLException(Alert.java:130)
    at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:378)
    at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:321)
    at java.base/sun.security.ssl.TransportContext.fatal(TransportContext.java:316)
    at java.base/sun.security.ssl.CertificateMessage$T12CertificateConsumer.checkServerCerts(CertificateMessage.java:647)
    at java.base/sun.security.ssl.CertificateMessage$T12CertificateConsumer.onCertificate(CertificateMessage.java:467)
    at java.base/sun.security.ssl.CertificateMessage$T12CertificateConsumer.consume(CertificateMessage.java:363)
    at java.base/sun.security.ssl.SSLHandshake.consume(SSLHandshake.java:393)
    at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:469)
    at java.base/sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:447)
    at java.base/sun.security.ssl.TransportContext.dispatch(TransportContext.java:201)
    at java.base/sun.security.ssl.SSLTransport.decode(SSLTransport.java:172)
    at java.base/sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1506)
    at java.base/sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1421)
    at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:455)
    at java.base/sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:426)
    at java.base/sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:587)
    at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:187)
    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.ClientInstall.run(ClientInstall.java:89)
    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)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at java.base/sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:388)
    at java.base/sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:271)
    at java.base/sun.security.validator.Validator.validate(Validator.java:256)
    at java.base/sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:230)
    at java.base/sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:132)
    at java.base/sun.security.ssl.CertificateMessage$T12CertificateConsumer.checkServerCerts(CertificateMessage.java:631)
    ... 24 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at java.base/sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:146)
    at java.base/sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:127)
    at java.base/java.security.cert.CertPathBuilder.build(CertPathBuilder.java:297)
    at java.base/sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:383)
    ... 29 more
Failed to download version manifest, can not find client jar URL.
 

Hi!

It looks like you're having issues installing Forge. 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.

Looking forward to your reply!

 

# 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
51.68.172.243 sessionserver.mojang.com
51.68.172.243 launchermeta.mojang.com
 

Just now, Vidz said:

 

# 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
51.68.172.243 sessionserver.mojang.com
51.68.172.243 launchermeta.mojang.com
 

This might be the host notepad file? or did i do something wrong.

 

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