Friend tried to install the launcher and got this error Computer was restarted, java was reinstalled, twice for both 32 and 64 bit, only have 64 atm Anyone else got anything we could try? Spoiler: "Crash Log" To report this error, provide: java.net.SocketException: Address family not supported by protocol family: connect at java.net.DualStackPlainSocketImpl.connect0(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source) at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) 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 java.net.Socket.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.http.HttpClient.<init>(Unknown Source) at sun.net.www.http.HttpClient.New(Unknown Source) at sun.net.www.http.HttpClient.New(Unknown Source) at sun.net.www.protocol.http.HttpURLConnection.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.http.HttpURLConnection.connect(Unknown Source) at com.skcraft.launcher.bootstrap.HttpRequest.execute(HttpRequest.java:115) at com.skcraft.launcher.bootstrap.Downloader.execute(Downloader.java:73) at com.skcraft.launcher.bootstrap.Downloader.run(Downloader.java:42) at java.lang.Thread.run(Unknown Source)
Looks like your java installation is trying to use IPv6. Please download the jar version of the launcher and then run it via Command Prompt with the command java -Djava.net.preferIPv4Stack=true -Djava.net.preferIPv6Addresses=false -jar MyM-Launcher.jar Also check if you have "Relevant Knowledge" installed under Programs and Features and uninstall it as this malware can cause this error. Source: java - Address family not supported by protocol family - SocketException on a specific computer - Stack Overflow
