SonarQube scanner error: SonarQube server can not be reached

Hi!
I ran into a problem during using SonarQube scanner for windows to upload projects to my SonarQube 8.1 developer server. Here is the console log:

sonar-scanner -Dproject.settings=sonar-scanner.properties

INFO: Scanner configuration file: [FILE PATH]conf\sonar-scanner.properties
INFO: Project root configuration file: [FILE PATH]\sonar-scanner.properties
INFO: SonarScanner 4.3.0.2102
INFO: Java 11.0.3 AdoptOpenJDK (64-bit)
INFO: Windows 10 10.0 amd64
INFO: User cache: [CACHE LOCATION]
ERROR: SonarQube server [CORRECT SERVER IP] can not be reached
INFO: ------------------------------------------------------------------------
INFO: EXECUTION FAILURE
INFO: ------------------------------------------------------------------------
INFO: Total time: 0.513s
INFO: Final Memory: 3M/27M
INFO: ------------------------------------------------------------------------
ERROR: Error during SonarScanner execution
org.sonarsource.scanner.api.internal.ScannerException: Unable to execute SonarScanner analysis
        at org.sonarsource.scanner.api.internal.IsolatedLauncherFactory.lambda$createLauncher$0(IsolatedLauncherFactory.java:85)
        at java.base/java.security.AccessController.doPrivileged(Native Method)
        at org.sonarsource.scanner.api.internal.IsolatedLauncherFactory.createLauncher(IsolatedLauncherFactory.java:74)
        at org.sonarsource.scanner.api.internal.IsolatedLauncherFactory.createLauncher(IsolatedLauncherFactory.java:70)
        at org.sonarsource.scanner.api.EmbeddedScanner.doStart(EmbeddedScanner.java:185)
        at org.sonarsource.scanner.api.EmbeddedScanner.start(EmbeddedScanner.java:123)
        at org.sonarsource.scanner.cli.Main.execute(Main.java:73)
        at org.sonarsource.scanner.cli.Main.main(Main.java:61)
Caused by: java.lang.IllegalStateException: Fail to get bootstrap index from server
        at org.sonarsource.scanner.api.internal.BootstrapIndexDownloader.getIndex(BootstrapIndexDownloader.java:42)
        at org.sonarsource.scanner.api.internal.JarDownloader.getScannerEngineFiles(JarDownloader.java:58)
        at org.sonarsource.scanner.api.internal.JarDownloader.download(JarDownloader.java:53)
        at org.sonarsource.scanner.api.internal.IsolatedLauncherFactory.lambda$createLauncher$0(IsolatedLauncherFactory.java:76)
        ... 7 more
Caused by: java.net.SocketException: Invalid argument: create
        at java.base/java.net.Socket.createImpl(Unknown Source)
        at java.base/java.net.Socket.getImpl(Unknown Source)
        at java.base/java.net.Socket.setSoTimeout(Unknown Source)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.connection.RealConnection.connectSocket(RealConnection.java:261)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.connection.RealConnection.connect(RealConnection.java:183)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.java:224)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.java:108)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.connection.ExchangeFinder.find(ExchangeFinder.java:88)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.connection.Transmitter.newExchange(Transmitter.java:169)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:41)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:94)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:88)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.RealCall.getResponseWithInterceptorChain(RealCall.java:221)
        at org.sonarsource.scanner.api.internal.shaded.okhttp.RealCall.execute(RealCall.java:81)
        at org.sonarsource.scanner.api.internal.ServerConnection.callUrl(ServerConnection.java:114)
        at org.sonarsource.scanner.api.internal.ServerConnection.downloadString(ServerConnection.java:99)
        at org.sonarsource.scanner.api.internal.BootstrapIndexDownloader.getIndex(BootstrapIndexDownloader.java:39)
        ... 10 more
ERROR:
ERROR: Re-run SonarScanner using the -X switch to enable full debug logging.

The server is up and running, i can ping it from cmd and telnet into it. Its avaliable in chrome too. And the webservices are also avaliable.

Thank you for all the answers in advance.

Thankfully i found the problem with our proxy settings and local network permissions :slight_smile:

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