When I try to install forge 1.18.2 it errors out and says,

Failed to run processor: java.net.UnknownHostException:launchermeta.mojang.com

Tried to run version file and get 

Failed to download file. Name: 1.18.2-forge-40.1.14.jar URL: https://launcher.mojang.com/v1/objects/2e9a3e3107cca00d6bc9c97bf7d149cae163ef21/client.jar Error details: Could not resolve host: launcher.mojang.com Filename on disk: 1.18.2-forge-40.1.14.jar Path: C:\Users\joejo\AppData\Roaming\.minecraft\versions\1.18.2-forge-40.1.14\1.18.2-forge-40.1.14.jar Exists: Nonexistent

JVM info: Oracle Corporation - 1.8.0_333 - 25.333-b02
java.net.preferIPv4Stack=true
Found java version 1.8.0_333
java.net.UnknownHostException: files.minecraftforge.net
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.connect(Unknown Source)
    at sun.net.NetworkClient.doConnect(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source)
    at sun.net.www.protocol.https.HttpsClient.New(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    at java.net.HttpURLConnection.getResponseCode(Unknown Source)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
    at net.minecraftforge.installer.DownloadUtils.getConnection(DownloadUtils.java:243)
    at net.minecraftforge.installer.DownloadUtils.downloadMirrors(DownloadUtils.java:293)
    at net.minecraftforge.installer.json.Install.getMirror(Install.java:117)
    at net.minecraftforge.installer.InstallerPanel.updateFilePath(InstallerPanel.java:369)
    at net.minecraftforge.installer.InstallerPanel.<init>(InstallerPanel.java:350)
    at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:174)
    at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:147)
Extracting json
Considering minecraft client jar
Downloading libraries
Found 0 additional library directories
Considering library cpw.mods:securejarhandler:1.0.3
  File exists: Checksum validated.
Considering library org.ow2.asm:asm:9.2
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-commons:9.2
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-tree:9.2
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-util:9.2
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-analysis:9.2
  File exists: Checksum validated.
Considering library net.minecraftforge:accesstransformers:8.0.4
  File exists: Checksum validated.
Considering library org.antlr:antlr4-runtime:4.9.1
  File exists: Checksum validated.
Considering library net.minecraftforge:eventbus:5.0.3
  File exists: Checksum validated.
Considering library net.minecraftforge:forgespi:4.0.10
  File exists: Checksum validated.
Considering library net.minecraftforge:coremods:5.0.1
  File exists: Checksum validated.
Considering library cpw.mods:modlauncher:9.1.3
  File exists: Checksum validated.
Considering library net.minecraftforge:unsafe:0.2.0
  File exists: Checksum validated.
Considering library com.electronwill.night-config:core:3.6.4
  File exists: Checksum validated.
Considering library com.electronwill.night-config:toml:3.6.4
  File exists: Checksum validated.
Considering library org.apache.maven:maven-artifact:3.6.3
  File exists: Checksum validated.
Considering library net.jodah:typetools:0.8.3
  File exists: Checksum validated.
Considering library net.minecrell:terminalconsoleappender:1.2.0
  File exists: Checksum validated.
Considering library org.jline:jline-reader:3.12.1
  File exists: Checksum validated.
Considering library org.jline:jline-terminal:3.12.1
  File exists: Checksum validated.
Considering library org.spongepowered:mixin:0.8.5
  File exists: Checksum validated.
Considering library org.openjdk.nashorn:nashorn-core:15.3
  File exists: Checksum validated.
Considering library cpw.mods:bootstraplauncher:1.0.0
  File exists: Checksum validated.
Considering library net.minecraftforge:fmlloader:1.18.2-40.1.14
  File exists: Checksum validated.
Considering library com.github.jponge:lzma-java:1.3
  File exists: Checksum validated.
Considering library com.google.code.findbugs:jsr305:3.0.2
  File exists: Checksum validated.
Considering library com.google.code.gson:gson:2.8.7
  File exists: Checksum validated.
Considering library com.google.errorprone:error_prone_annotations:2.1.3
  File exists: Checksum validated.
Considering library com.google.guava:guava:20.0
  File exists: Checksum validated.
Considering library com.google.guava:guava:25.1-jre
  File exists: Checksum validated.
Considering library com.google.j2objc:j2objc-annotations:1.1
  File exists: Checksum validated.
Considering library com.nothome:javaxdelta:2.0.1
  File exists: Checksum validated.
Considering library com.opencsv:opencsv:4.4
  File exists: Checksum validated.
Considering library commons-beanutils:commons-beanutils:1.9.3
  File exists: Checksum validated.
Considering library commons-collections:commons-collections:3.2.2
  File exists: Checksum validated.
Considering library commons-io:commons-io:2.4
  File exists: Checksum validated.
Considering library commons-logging:commons-logging:1.2
  File exists: Checksum validated.
Considering library de.oceanlabs.mcp:mcp_config:1.18.2-20220404.173914@zip
  File exists: Checksum validated.
Considering library de.siegmar:fastcsv:2.0.0
  File exists: Checksum validated.
Considering library net.md-5:SpecialSource:1.10.0
  File exists: Checksum validated.
Considering library net.minecraftforge:ForgeAutoRenamingTool:0.1.22:all
  File exists: Checksum validated.
Considering library net.minecraftforge:binarypatcher:1.0.12
  File exists: Checksum validated.
Considering library net.minecraftforge:fmlcore:1.18.2-40.1.14
  File exists: Checksum validated.
Considering library net.minecraftforge:fmlloader:1.18.2-40.1.14
  File exists: Checksum validated.
Considering library net.minecraftforge:forge:1.18.2-40.1.14:universal
  File exists: Checksum validated.
Considering library net.minecraftforge:installertools:1.2.10
  File exists: Checksum validated.
Considering library net.minecraftforge:jarsplitter:1.1.4
  File exists: Checksum validated.
Considering library net.minecraftforge:javafmllanguage:1.18.2-40.1.14
  File exists: Checksum validated.
Considering library net.minecraftforge:mclanguage:1.18.2-40.1.14
  File exists: Checksum validated.
Considering library net.minecraftforge:srgutils:0.4.3
  File exists: Checksum validated.
Considering library net.minecraftforge:srgutils:0.4.9
  File exists: Checksum validated.
Considering library net.sf.jopt-simple:jopt-simple:5.0.4
  File exists: Checksum validated.
Considering library net.sf.jopt-simple:jopt-simple:6.0-alpha-3
  File exists: Checksum validated.
Considering library org.apache.commons:commons-collections4:4.2
  File exists: Checksum validated.
Considering library org.apache.commons:commons-lang3:3.8.1
  File exists: Checksum validated.
Considering library org.apache.commons:commons-text:1.3
  File exists: Checksum validated.
Considering library org.checkerframework:checker-qual:2.0.0
  File exists: Checksum validated.
Considering library org.codehaus.mojo:animal-sniffer-annotations:1.14
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-analysis:9.1
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-analysis:9.2
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-commons:9.1
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-commons:9.2
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-tree:9.1
  File exists: Checksum validated.
Considering library org.ow2.asm:asm-tree:9.2
  File exists: Checksum validated.
Considering library org.ow2.asm:asm:9.1
  File exists: Checksum validated.
Considering library org.ow2.asm:asm:9.2
  File exists: Checksum validated.
Considering library trove:trove:1.0.2
  File exists: Checksum validated.
Created Temporary Directory: C:\Users\joejo\AppData\Local\Temp\forge_installer4385425623298333242
  Extracting: /data/client.lzma
Building Processors
===============================================================================
  MainClass: net.minecraftforge.installertools.ConsoleTool
  Classpath:
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\net\minecraftforge\installertools\1.2.10\installertools-1.2.10.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\net\md-5\SpecialSource\1.10.0\SpecialSource-1.10.0.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\5.0.4\jopt-simple-5.0.4.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.8.7\gson-2.8.7.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\de\siegmar\fastcsv\2.0.0\fastcsv-2.0.0.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\net\minecraftforge\srgutils\0.4.3\srgutils-0.4.3.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-commons\9.1\asm-commons-9.1.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\20.0\guava-20.0.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\com\opencsv\opencsv\4.4\opencsv-4.4.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-analysis\9.1\asm-analysis-9.1.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-tree\9.1\asm-tree-9.1.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm\9.1\asm-9.1.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-text\1.3\commons-text-1.3.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.8.1\commons-lang3-3.8.1.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\commons-beanutils\commons-beanutils\1.9.3\commons-beanutils-1.9.3.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-collections4\4.2\commons-collections4-4.2.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.2\commons-logging-1.2.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar
  Args: --task, MCP_DATA, --input, C:\Users\joejo\AppData\Roaming\.minecraft\libraries\de\oceanlabs\mcp\mcp_config\1.18.2-20220404.173914\mcp_config-1.18.2-20220404.173914.zip, --output, C:\Users\joejo\AppData\Roaming\.minecraft\libraries\de\oceanlabs\mcp\mcp_config\1.18.2-20220404.173914\mcp_config-1.18.2-20220404.173914-mappings.txt, --key, mappings
Task: MCP_DATA
Input:  C:\Users\joejo\AppData\Roaming\.minecraft\libraries\de\oceanlabs\mcp\mcp_config\1.18.2-20220404.173914\mcp_config-1.18.2-20220404.173914.zip
Output: C:\Users\joejo\AppData\Roaming\.minecraft\libraries\de\oceanlabs\mcp\mcp_config\1.18.2-20220404.173914\mcp_config-1.18.2-20220404.173914-mappings.txt
Key:    mappings
Extracting: config/joined.tsrg
===============================================================================
  MainClass: net.minecraftforge.installertools.ConsoleTool
  Classpath:
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\net\minecraftforge\installertools\1.2.10\installertools-1.2.10.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\net\md-5\SpecialSource\1.10.0\SpecialSource-1.10.0.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\5.0.4\jopt-simple-5.0.4.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.8.7\gson-2.8.7.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\de\siegmar\fastcsv\2.0.0\fastcsv-2.0.0.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\net\minecraftforge\srgutils\0.4.3\srgutils-0.4.3.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-commons\9.1\asm-commons-9.1.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\20.0\guava-20.0.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\com\opencsv\opencsv\4.4\opencsv-4.4.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-analysis\9.1\asm-analysis-9.1.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-tree\9.1\asm-tree-9.1.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm\9.1\asm-9.1.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-text\1.3\commons-text-1.3.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.8.1\commons-lang3-3.8.1.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\commons-beanutils\commons-beanutils\1.9.3\commons-beanutils-1.9.3.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-collections4\4.2\commons-collections4-4.2.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\commons-logging\commons-logging\1.2\commons-logging-1.2.jar
    C:\Users\joejo\AppData\Roaming\.minecraft\libraries\commons-collections\commons-collections\3.2.2\commons-collections-3.2.2.jar
  Args: --task, DOWNLOAD_MOJMAPS, --version, 1.18.2, --side, client, --output, C:\Users\joejo\AppData\Roaming\.minecraft\libraries\net\minecraft\client\1.18.2-20220404.173914\client-1.18.2-20220404.173914-mappings.txt
Task: DOWNLOAD_MOJMAPS
MC Version: 1.18.2
Side:       client
Output:     C:\Users\joejo\AppData\Roaming\.minecraft\libraries\net\minecraft\client\1.18.2-20220404.173914\client-1.18.2-20220404.173914-mappings.txt
java.net.UnknownHostException: launchermeta.mojang.com
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.connect(Unknown Source)
    at sun.security.ssl.BaseSSLSocketImpl.connect(Unknown Source)
    at sun.net.NetworkClient.doConnect(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.http.HttpClient.openServer(Unknown Source)
    at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source)
    at sun.net.www.protocol.https.HttpsClient.New(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unknown Source)
    at java.net.URL.openStream(Unknown Source)
    at net.minecraftforge.installertools.DownloadMojmaps.process(DownloadMojmaps.java:65)
    at net.minecraftforge.installertools.ConsoleTool.main(ConsoleTool.java:55)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at net.minecraftforge.installer.actions.PostProcessors.process(PostProcessors.java:226)
    at net.minecraftforge.installer.actions.ClientInstall.run(ClientInstall.java:144)
    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 run processor: java.net.UnknownHostException:launchermeta.mojang.com
See log for more details.

Edited May 6, 20223 yr by Joejo
added log

18 hours ago, diesieben07 said:

Post the full installer log.

Just added the log.

Had to reinstall and restart computer. Works great now.