Unable to start Sonarqube - sonarqube

Question

I tried to install sonarqube on Windows Server 2016. No problem during the installation and I even got access to the web interface. Everything is working just fine.
But, I had to restart my server. Now Sonarqube refuses to start again.
Here the sonar.log :
--> Wrapper Started as Console
Launching a JVM...
Wrapper (Version 3.2.3) http://wrapper.tanukisoftware.org
Copyright 1999-2006 Tanuki Software, Inc. All Rights Reserved.
2018.05.25 15:51:26 INFO app[][o.s.a.AppFileSystem] Cleaning or creating temp directory C:\sonarqube\sonarqube-6.7.3\temp
2018.05.25 15:51:26 INFO app[][o.s.a.es.EsSettings] Elasticsearch listening on /127.0.0.1:9001
2018.05.25 15:51:26 INFO app[][o.s.a.p.ProcessLauncherImpl] Launch process[[key='es', ipcIndex=1, logFilenamePrefix=es]] from [C:\sonarqube\sonarqube-6.7.3\elasticsearch]: C:\Program Files\Java\jdk1.8.0_171\jre\bin\java -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=75 -XX:+UseCMSInitiatingOccupancyOnly -XX:+AlwaysPreTouch -server -Xss1m -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Djna.nosys=true -Djdk.io.permissionsUseCanonicalPath=true -Dio.netty.noUnsafe=true -Dio.netty.noKeySetOptimization=true -Dio.netty.recycler.maxCapacityPerThread=0 -Dlog4j.shutdownHookEnabled=false -Dlog4j2.disable.jmx=true -Dlog4j.skipJansi=true -Xms2048m -Xmx2048m -XX:+HeapDumpOnOutOfMemoryError -Delasticsearch -Des.path.home=C:\sonarqube\sonarqube-6.7.3\elasticsearch -cp lib/* org.elasticsearch.bootstrap.Elasticsearch -Epath.conf=C:\sonarqube\sonarqube-6.7.3\temp\conf\es
2018.05.25 15:51:26 INFO app[][o.s.a.SchedulerImpl] Waiting for Elasticsearch to be up and running
2018.05.25 15:51:27 INFO app[][o.e.p.PluginsService] no modules loaded
2018.05.25 15:51:27 INFO app[][o.e.p.PluginsService] loaded plugin [org.elasticsearch.transport.Netty4Plugin]
2018.05.25 15:51:31 DEBUG app[][i.netty.util.NetUtil] Failed to get SOMAXCONN from sysctl and file \proc\sys\net\core\somaxconn. Default: 200
2018.05.25 15:51:34 DEBUG app[][o.e.c.t.TransportClientNodesService] failed to connect to node [{#transport#-1}{rUfN9MfRR1yx1epNtNzu6A}{127.0.0.1}{127.0.0.1:9001}], ignoring...
2018.05.25 15:51:34 DEBUG app[][o.s.a.p.EsProcessMonitor] Connected to Elasticsearch node: [127.0.0.1:9001]
2018.05.25 15:51:36 DEBUG app[][o.e.c.t.TransportClientNodesService] failed to connect to node [{#transport#-1}{rUfN9MfRR1yx1epNtNzu6A}{127.0.0.1}{127.0.0.1:9001}], ignoring...
2018.05.25 15:51:41 DEBUG app[][o.e.t.n.Netty4Transport] connected to node [{sonarqube}{CFUKuUDmTQ2UsgzJtMo9sA}{-uBZwbFUTHyRUFcE7jQ78w}{127.0.0.1}{127.0.0.1:9001}{rack_id=sonarqube}]
2018.05.25 15:51:48 INFO app[][o.s.a.SchedulerImpl] Process[es] is up
2018.05.25 15:51:48 INFO app[][o.s.a.p.ProcessLauncherImpl] Launch process[[key='web', ipcIndex=2, logFilenamePrefix=web]] from [C:\sonarqube\sonarqube-6.7.3]: C:\Program Files\Java\jdk1.8.0_171\jre\bin\java -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Djava.io.tmpdir=C:\sonarqube\sonarqube-6.7.3\temp -Xmx2048m -Xms2048m -XX:+HeapDumpOnOutOfMemoryError -cp ./lib/common/*;./lib/server/*;C:\sonarqube\sonarqube-6.7.3\lib\jdbc\mssql\mssql-jdbc-6.2.2.jre8.jar org.sonar.server.app.WebServer C:\sonarqube\sonarqube-6.7.3\temp\sq-process5165540938815359073properties
2018.05.25 15:52:10 DEBUG app[][o.s.a.p.AbstractProcessMonitor] Process exited with exit value [web]: 0
2018.05.25 15:52:10 INFO app[][o.s.a.SchedulerImpl] Process [web] is stopped
2018.05.25 15:52:10 INFO app[][o.s.a.SchedulerImpl] Process [es] is stopped
2018.05.25 15:52:10 INFO app[][o.s.a.SchedulerImpl] SonarQube is stopped
<-- Wrapper Stopped
the web.log :
2018.05.25 15:51:48 INFO web[][o.s.p.ProcessEntryPoint] Starting web
2018.05.25 15:51:49 INFO web[][o.a.t.u.n.NioSelectorPool] Using a shared selector for servlet write/read
2018.05.25 15:51:51 INFO web[][o.e.p.PluginsService] no modules loaded
2018.05.25 15:51:51 INFO web[][o.e.p.PluginsService] loaded plugin [org.elasticsearch.index.reindex.ReindexPlugin]
2018.05.25 15:51:51 INFO web[][o.e.p.PluginsService] loaded plugin [org.elasticsearch.join.ParentJoinPlugin]
2018.05.25 15:51:51 INFO web[][o.e.p.PluginsService] loaded plugin [org.elasticsearch.percolator.PercolatorPlugin]
2018.05.25 15:51:51 INFO web[][o.e.p.PluginsService] loaded plugin [org.elasticsearch.transport.Netty4Plugin]
2018.05.25 15:51:52 DEBUG web[][i.n.c.MultithreadEventLoopGroup] -Dio.netty.eventLoopThreads: 2
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent] Platform: Windows
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent0] -Dio.netty.noUnsafe: false
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent0] Java version: 8
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent0] sun.misc.Unsafe.theUnsafe: available
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent0] sun.misc.Unsafe.copyMemory: available
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent0] java.nio.Buffer.address: available
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent0] direct buffer constructor: available
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent0] java.nio.Bits.unaligned: available, true
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent0] jdk.internal.misc.Unsafe.allocateUninitializedArray(int): unavailable prior to Java9
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent0] java.nio.DirectByteBuffer.<init>(long, int): available
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent] sun.misc.Unsafe: available
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent] -Dio.netty.tmpdir: C:\sonarqube\sonarqube-6.7.3\temp (java.io.tmpdir)
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent] -Dio.netty.bitMode: 64 (sun.arch.data.model)
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent] -Dio.netty.noPreferDirect: false
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent] -Dio.netty.maxDirectMemory: 2075918336 bytes
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent] -Dio.netty.uninitializedArrayAllocationThreshold: -1
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.CleanerJava6] java.nio.ByteBuffer.cleaner(): available
2018.05.25 15:51:52 DEBUG web[][i.n.c.n.NioEventLoop] -Dio.netty.noKeySetOptimization: false
2018.05.25 15:51:52 DEBUG web[][i.n.c.n.NioEventLoop] -Dio.netty.selectorAutoRebuildThreshold: 512
2018.05.25 15:51:52 DEBUG web[][i.n.u.i.PlatformDependent] org.jctools-core.MpscChunkedArrayQueue: available
2018.05.25 15:51:52 DEBUG web[][i.n.c.DefaultChannelId] -Dio.netty.processId: 5492 (auto-detected)
2018.05.25 15:51:52 DEBUG web[][i.netty.util.NetUtil] -Djava.net.preferIPv4Stack: false
2018.05.25 15:51:52 DEBUG web[][i.netty.util.NetUtil] -Djava.net.preferIPv6Addresses: false
2018.05.25 15:51:52 DEBUG web[][i.netty.util.NetUtil] Loopback interface: lo (Software Loopback Interface 1, 127.0.0.1)
2018.05.25 15:51:52 DEBUG web[][i.netty.util.NetUtil] Failed to get SOMAXCONN from sysctl and file \proc\sys\net\core\somaxconn. Default: 200
2018.05.25 15:51:52 DEBUG web[][i.n.c.DefaultChannelId] -Dio.netty.machineId: 00:15:5d:ff:fe:01:ab:03 (auto-detected)
2018.05.25 15:51:52 DEBUG web[][i.n.u.ResourceLeakDetector] -Dio.netty.leakDetection.level: simple
2018.05.25 15:51:52 DEBUG web[][i.n.u.ResourceLeakDetector] -Dio.netty.leakDetection.maxRecords: 4
2018.05.25 15:51:52 DEBUG web[][i.n.b.PooledByteBufAllocator] -Dio.netty.allocator.numHeapArenas: 2
2018.05.25 15:51:52 DEBUG web[][i.n.b.PooledByteBufAllocator] -Dio.netty.allocator.numDirectArenas: 2
2018.05.25 15:51:52 DEBUG web[][i.n.b.PooledByteBufAllocator] -Dio.netty.allocator.pageSize: 8192
2018.05.25 15:51:52 DEBUG web[][i.n.b.PooledByteBufAllocator] -Dio.netty.allocator.maxOrder: 11
2018.05.25 15:51:52 DEBUG web[][i.n.b.PooledByteBufAllocator] -Dio.netty.allocator.chunkSize: 16777216
2018.05.25 15:51:52 DEBUG web[][i.n.b.PooledByteBufAllocator] -Dio.netty.allocator.tinyCacheSize: 512
2018.05.25 15:51:52 DEBUG web[][i.n.b.PooledByteBufAllocator] -Dio.netty.allocator.smallCacheSize: 256
2018.05.25 15:51:52 DEBUG web[][i.n.b.PooledByteBufAllocator] -Dio.netty.allocator.normalCacheSize: 64
2018.05.25 15:51:52 DEBUG web[][i.n.b.PooledByteBufAllocator] -Dio.netty.allocator.maxCachedBufferCapacity: 32768
2018.05.25 15:51:52 DEBUG web[][i.n.b.PooledByteBufAllocator] -Dio.netty.allocator.cacheTrimInterval: 8192
2018.05.25 15:51:52 DEBUG web[][i.n.b.PooledByteBufAllocator] -Dio.netty.allocator.useCacheForAllThreads: true
2018.05.25 15:51:52 DEBUG web[][i.n.b.ByteBufUtil] -Dio.netty.allocator.type: pooled
2018.05.25 15:51:52 DEBUG web[][i.n.b.ByteBufUtil] -Dio.netty.threadLocalDirectBufferSize: 65536
2018.05.25 15:51:52 DEBUG web[][i.n.b.ByteBufUtil] -Dio.netty.maxThreadLocalCharBufferSize: 16384
2018.05.25 15:51:52 DEBUG web[][i.n.b.AbstractByteBuf] -Dio.netty.buffer.bytebuf.checkAccessible: true
2018.05.25 15:51:52 DEBUG web[][i.n.u.ResourceLeakDetectorFactory] Loaded default ResourceLeakDetector: io.netty.util.ResourceLeakDetector#497e6350
2018.05.25 15:51:52 DEBUG web[][i.n.util.Recycler] -Dio.netty.recycler.maxCapacityPerThread: 32768
2018.05.25 15:51:52 DEBUG web[][i.n.util.Recycler] -Dio.netty.recycler.maxSharedCapacityFactor: 2
2018.05.25 15:51:52 DEBUG web[][i.n.util.Recycler] -Dio.netty.recycler.linkCapacity: 16
2018.05.25 15:51:52 DEBUG web[][i.n.util.Recycler] -Dio.netty.recycler.ratio: 8
2018.05.25 15:51:53 INFO web[][o.s.s.e.EsClientProvider] Connected to local Elasticsearch: [127.0.0.1:9001]
2018.05.25 15:51:53 INFO web[][o.s.s.p.LogServerVersion] SonarQube Server / 6.7.3.38370 / baa823c2ae6ed4dd406b2ef12bc5ac6201e466f9
2018.05.25 15:51:53 INFO web[][o.sonar.db.Database] Create JDBC data source for jdbc:sqlserver://localhost;databaseName=sonar
2018.05.25 15:52:09 ERROR web[][o.s.s.p.Platform] Web server startup failed
I've tried to change a lots of settings in .conf of sonar and wrapper without any success. Can anyone help ? I can provide more info if needed.
Thanks a lot!