Unable to reload Maven project: Cannot reconnect. java.lang.RuntimeException: Cannot reconnect

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i got a new Mac Book and installed IntellJ, as soon as I try to import (new Project from existing source) a maven project i get the error “Unable to reload Maven project”. To make it simpler, i just created a new simple maven project via start.spring.io to make sure I dont have any fancy dependencies.

I also tried to run mvn install via terminal. This was working out!

IntelliJ Log:

2020-06-03 18:34:17,299 [  20303]   WARN - Container.ComponentManagerImpl - Do not use constructor injection (requestorClass=de.plushnikov.intellij.plugin.lombokconfig.ConfigDiscovery) 
2020-06-03 18:34:33,659 [  36663]   WARN - ution.rmi.RemoteProcessSupport - java.rmi.NotBoundException: _DEAD_HAND_ 
2020-06-03 18:34:33,659 [  36663]   WARN - ution.rmi.RemoteProcessSupport - at sun.rmi.registry.RegistryImpl.lookup(RegistryImpl.java:227) 
2020-06-03 18:34:33,659 [  36663]   WARN - ution.rmi.RemoteProcessSupport - at com.intellij.execution.rmi.RemoteServer.start(RemoteServer.java:93) 
2020-06-03 18:34:33,659 [  36663]   WARN - ution.rmi.RemoteProcessSupport - at org.jetbrains.idea.maven.server.RemoteMavenServer36.main(RemoteMavenServer36.java:23) 
2020-06-03 18:34:34,012 [  37016]   WARN - ution.rmi.RemoteProcessSupport - The cook failed to start due to java.io.EOFException 
2020-06-03 18:34:34,014 [  37018]  ERROR -      #org.jetbrains.idea.maven - Cannot reconnect. 
java.lang.RuntimeException: Cannot reconnect.
    at org.jetbrains.idea.maven.server.RemoteObjectWrapper.perform(RemoteObjectWrapper.java:82)
    at org.jetbrains.idea.maven.server.MavenServerManager.applyProfiles(MavenServerManager.java:445)
    at org.jetbrains.idea.maven.project.MavenProjectReader.applyProfiles(MavenProjectReader.java:385)
    at org.jetbrains.idea.maven.project.MavenProjectReader.doReadProjectModel(MavenProjectReader.java:94)
    at org.jetbrains.idea.maven.project.MavenProjectReader.access$300(MavenProjectReader.java:37)
    at org.jetbrains.idea.maven.project.MavenProjectReader$1.doProcessParent(MavenProjectReader.java:439)
    at org.jetbrains.idea.maven.project.MavenProjectReader$1.doProcessParent(MavenProjectReader.java:415)
    at org.jetbrains.idea.maven.project.MavenParentProjectFileProcessor.processRepositoryParent(MavenParentProjectFileProcessor.java:84)
    at org.jetbrains.idea.maven.project.MavenParentProjectFileProcessor.process(MavenParentProjectFileProcessor.java:62)
    at org.jetbrains.idea.maven.project.MavenProjectReader.resolveInheritance(MavenProjectReader.java:442)
    at org.jetbrains.idea.maven.project.MavenProjectReader.doReadProjectModel(MavenProjectReader.java:91)
    at org.jetbrains.idea.maven.project.MavenProjectReader.access$300(MavenProjectReader.java:37)
    at org.jetbrains.idea.maven.project.MavenProjectReader$1.doProcessParent(MavenProjectReader.java:439)
    at org.jetbrains.idea.maven.project.MavenProjectReader$1.doProcessParent(MavenProjectReader.java:415)
    at org.jetbrains.idea.maven.project.MavenParentProjectFileProcessor.processRepositoryParent(MavenParentProjectFileProcessor.java:84)
    at org.jetbrains.idea.maven.project.MavenParentProjectFileProcessor.process(MavenParentProjectFileProcessor.java:62)
    at org.jetbrains.idea.maven.project.MavenProjectReader.resolveInheritance(MavenProjectReader.java:442)
    at org.jetbrains.idea.maven.project.MavenProjectReader.doReadProjectModel(MavenProjectReader.java:91)
    at org.jetbrains.idea.maven.project.MavenProjectReader.readProject(MavenProjectReader.java:53)
    at org.jetbrains.idea.maven.project.MavenProject.read(MavenProject.java:684)
    at org.jetbrains.idea.maven.project.MavenProjectsTree.doUpdate(MavenProjectsTree.java:544)
    at org.jetbrains.idea.maven.project.MavenProjectsTree.doAdd(MavenProjectsTree.java:490)
    at org.jetbrains.idea.maven.project.MavenProjectsTree.update(MavenProjectsTree.java:451)
    at org.jetbrains.idea.maven.project.MavenProjectsTree.updateAll(MavenProjectsTree.java:422)
    at org.jetbrains.idea.maven.project.MavenProjectsProcessorReadingTask.perform(MavenProjectsProcessorReadingTask.java:61)
    at org.jetbrains.idea.maven.project.MavenProjectsProcessor.doProcessPendingTasks(MavenProjectsProcessor.java:141)
    at org.jetbrains.idea.maven.project.MavenProjectsProcessor.access$000(MavenProjectsProcessor.java:35)
    at org.jetbrains.idea.maven.project.MavenProjectsProcessor$1.run(MavenProjectsProcessor.java:110)
    at org.jetbrains.idea.maven.utils.MavenUtil.lambda$runInBackground$5(MavenUtil.java:488)
    at com.intellij.util.RunnableCallable.call(RunnableCallable.java:20)
    at com.intellij.util.RunnableCallable.call(RunnableCallable.java:11)
    at com.intellij.openapi.application.impl.ApplicationImpl$1.call(ApplicationImpl.java:255)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.rmi.RemoteException: Cannot start maven service; nested exception is: 
    java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is: 
    java.net.ConnectException: Connection refused (Connection refused)
    at org.jetbrains.idea.maven.server.MavenServerManager.create(MavenServerManager.java:182)
    at org.jetbrains.idea.maven.server.MavenServerManager.create(MavenServerManager.java:83)
    at org.jetbrains.idea.maven.server.RemoteObjectWrapper.getOrCreateWrappee(RemoteObjectWrapper.java:41)
    at org.jetbrains.idea.maven.server.MavenServerManager.lambda$applyProfiles$8(MavenServerManager.java:445)
    at org.jetbrains.idea.maven.server.RemoteObjectWrapper.perform(RemoteObjectWrapper.java:76)
    ... 35 more
Caused by: java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is: 
    java.net.ConnectException: Connection refused (Connection refused)
    at java.rmi/sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:623)
    at java.rmi/sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:209)
    at java.rmi/sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:196)
    at java.rmi/sun.rmi.server.UnicastRef.newCall(UnicastRef.java:343)
    at java.rmi/sun.rmi.registry.RegistryImpl_Stub.lookup(RegistryImpl_Stub.java:116)
    at com.intellij.execution.rmi.RemoteProcessSupport.lambda$acquire$2(RemoteProcessSupport.java:253)
    at com.intellij.openapi.util.ClassLoaderUtil.computeWithClassLoader(ClassLoaderUtil.java:31)
    at com.intellij.execution.rmi.RemoteUtil.executeWithClassLoader(RemoteUtil.java:207)
    at com.intellij.execution.rmi.RemoteProcessSupport.acquire(RemoteProcessSupport.java:251)
    at com.intellij.execution.rmi.RemoteProcessSupport.acquire(RemoteProcessSupport.java:151)
    at org.jetbrains.idea.maven.server.MavenServerManager.create(MavenServerManager.java:170)
    ... 39 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
    at java.base/java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
    at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
    at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
    at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:403)
    at java.base/java.net.Socket.connect(Socket.java:609)
    at java.base/java.net.Socket.connect(Socket.java:558)
    at java.base/java.net.Socket.<init>(Socket.java:454)
    at java.base/java.net.Socket.<init>(Socket.java:231)
    at com.intellij.execution.rmi.RemoteServer$1.createSocket(RemoteServer.java:121)
    at java.rmi/sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:617)
    ... 49 more
2020-06-03 18:34:34,017 [  37021]  ERROR -      #org.jetbrains.idea.maven - IntelliJ IDEA 2020.1.2  Build #IU-201.7846.76 
2020-06-03 18:34:34,017 [  37021]  ERROR -      #org.jetbrains.idea.maven - JDK: 11.0.7; VM: OpenJDK 64-Bit Server VM; Vendor: JetBrains s.r.o. 
2020-06-03 18:34:34,017 [  37021]  ERROR -      #org.jetbrains.idea.maven - OS: Mac OS X 
2020-06-03 18:34:34,017 [  37021]  ERROR -      #org.jetbrains.idea.maven - Last Action:  
2020-06-03 18:34:34,102 [  37106]   WARN - ion.impl.NotificationCollector - Notification group 'System Messages' is already registered in whitelist 
2020-06-03 18:34:34,102 [  37106]   WARN - ion.impl.NotificationCollector - Notification group 'Project generator' is already registered in whitelist 
2020-06-03 18:34:34,102 [  37106]   WARN - ion.impl.NotificationCollector - Notification group 'Heap Dump Analysis' is already registered in whitelist 
2020-06-03 18:34:34,102 [  37106]   WARN - ion.impl.NotificationCollector - Notification group 'Low Memory' is already registered in whitelist 
2020-06-03 18:34:54,284 [  57288]   WARN - ution.rmi.RemoteProcessSupport - java.rmi.NotBoundException: _DEAD_HAND_ 
2020-06-03 18:34:54,286 [  57290]   WARN - ution.rmi.RemoteProcessSupport - at sun.rmi.registry.RegistryImpl.lookup(RegistryImpl.java:227) 
2020-06-03 18:34:54,286 [  57290]   WARN - ution.rmi.RemoteProcessSupport - at com.intellij.execution.rmi.RemoteServer.start(RemoteServer.java:93) 
2020-06-03 18:34:54,286 [  57290]   WARN - ution.rmi.RemoteProcessSupport - at org.jetbrains.idea.maven.server.RemoteMavenServer36.main(RemoteMavenServer36.java:23) 
2020-06-03 18:34:54,640 [  57644]   WARN - ution.rmi.RemoteProcessSupport - The cook failed to start due to java.io.EOFException 
2020-06-03 18:35:14,895 [  77899]   WARN - ution.rmi.RemoteProcessSupport - java.rmi.NotBoundException: _DEAD_HAND_ 
2020-06-03 18:35:14,895 [  77899]   WARN - ution.rmi.RemoteProcessSupport - at sun.rmi.registry.RegistryImpl.lookup(RegistryImpl.java:227) 
2020-06-03 18:35:14,895 [  77899]   WARN - ution.rmi.RemoteProcessSupport - at com.intellij.execution.rmi.RemoteServer.start(RemoteServer.java:93) 
2020-06-03 18:35:14,895 [  77899]   WARN - ution.rmi.RemoteProcessSupport - at org.jetbrains.idea.maven.server.RemoteMavenServer36.main(RemoteMavenServer36.java:23) 
2020-06-03 18:35:15,251 [  78255]   WARN - ution.rmi.RemoteProcessSupport - The cook failed to start due to java.io.EOFException 
2020-06-03 18:35:15,251 [  78255]  ERROR -      #org.jetbrains.idea.maven - Cannot reconnect. 
java.lang.RuntimeException: Cannot reconnect.
    at org.jetbrains.idea.maven.server.RemoteObjectWrapper.perform(RemoteObjectWrapper.java:82)
    at org.jetbrains.idea.maven.server.MavenServerManager.applyProfiles(MavenServerManager.java:445)
    at org.jetbrains.idea.maven.project.MavenProjectReader.applyProfiles(MavenProjectReader.java:385)
    at org.jetbrains.idea.maven.project.MavenProjectReader.doReadProjectModel(MavenProjectReader.java:94)
    at org.jetbrains.idea.maven.project.MavenProjectReader.access$300(MavenProjectReader.java:37)
    at org.jetbrains.idea.maven.project.MavenProjectReader$1.doProcessParent(MavenProjectReader.java:439)
    at org.jetbrains.idea.maven.project.MavenProjectReader$1.doProcessParent(MavenProjectReader.java:415)
    at org.jetbrains.idea.maven.project.MavenParentProjectFileProcessor.processRepositoryParent(MavenParentProjectFileProcessor.java:84)
    at org.jetbrains.idea.maven.project.MavenParentProjectFileProcessor.process(MavenParentProjectFileProcessor.java:62)
    at org.jetbrains.idea.maven.project.MavenProjectReader.resolveInheritance(MavenProjectReader.java:442)
    at org.jetbrains.idea.maven.project.MavenProjectReader.doReadProjectModel(MavenProjectReader.java:91)
    at org.jetbrains.idea.maven.project.MavenProjectReader.access$300(MavenProjectReader.java:37)
    at org.jetbrains.idea.maven.project.MavenProjectReader$1.doProcessParent(MavenProjectReader.java:439)
    at org.jetbrains.idea.maven.project.MavenProjectReader$1.doProcessParent(MavenProjectReader.java:415)
    at org.jetbrains.idea.maven.project.MavenParentProjectFileProcessor.processRepositoryParent(MavenParentProjectFileProcessor.java:84)
    at org.jetbrains.idea.maven.project.MavenParentProjectFileProcessor.process(MavenParentProjectFileProcessor.java:62)
    at org.jetbrains.idea.maven.project.MavenProjectReader.resolveInheritance(MavenProjectReader.java:442)
    at org.jetbrains.idea.maven.project.MavenProjectReader.doReadProjectModel(MavenProjectReader.java:91)
    at org.jetbrains.idea.maven.project.MavenProjectReader.readProject(MavenProjectReader.java:53)
    at org.jetbrains.idea.maven.project.MavenProject.read(MavenProject.java:684)
    at org.jetbrains.idea.maven.project.MavenProjectsTree.doUpdate(MavenProjectsTree.java:544)
    at org.jetbrains.idea.maven.project.MavenProjectsTree.doAdd(MavenProjectsTree.java:490)
    at org.jetbrains.idea.maven.project.MavenProjectsTree.update(MavenProjectsTree.java:451)
    at org.jetbrains.idea.maven.project.MavenProjectsTree.updateAll(MavenProjectsTree.java:422)
    at org.jetbrains.idea.maven.project.MavenProjectsProcessorReadingTask.perform(MavenProjectsProcessorReadingTask.java:61)
    at org.jetbrains.idea.maven.project.MavenProjectsProcessor.doProcessPendingTasks(MavenProjectsProcessor.java:141)
    at org.jetbrains.idea.maven.project.MavenProjectsProcessor.access$000(MavenProjectsProcessor.java:35)
    at org.jetbrains.idea.maven.project.MavenProjectsProcessor$1.run(MavenProjectsProcessor.java:110)
    at org.jetbrains.idea.maven.utils.MavenUtil.lambda$runInBackground$5(MavenUtil.java:488)
    at com.intellij.util.RunnableCallable.call(RunnableCallable.java:20)
    at com.intellij.util.RunnableCallable.call(RunnableCallable.java:11)
    at com.intellij.openapi.application.impl.ApplicationImpl$1.call(ApplicationImpl.java:255)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.rmi.RemoteException: Cannot start maven service; nested exception is: 
    java.rmi.ConnectIOException: error during JRMP connection establishment; nested exception is: 
    java.io.EOFException
    at org.jetbrains.idea.maven.server.MavenServerManager.create(MavenServerManager.java:182)
    at org.jetbrains.idea.maven.server.MavenServerManager.create(MavenServerManager.java:83)
    at org.jetbrains.idea.maven.server.RemoteObjectWrapper.getOrCreateWrappee(RemoteObjectWrapper.java:41)
    at org.jetbrains.idea.maven.server.MavenServerManager.lambda$applyProfiles$8(MavenServerManager.java:445)
    at org.jetbrains.idea.maven.server.RemoteObjectWrapper.perform(RemoteObjectWrapper.java:76)
    ... 35 more
Caused by: java.rmi.ConnectIOException: error during JRMP connection establishment; nested exception is: 
    java.io.EOFException
    at java.rmi/sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:300)
    at java.rmi/sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:196)
    at java.rmi/sun.rmi.server.UnicastRef.newCall(UnicastRef.java:343)
    at java.rmi/sun.rmi.registry.RegistryImpl_Stub.lookup(RegistryImpl_Stub.java:116)
    at com.intellij.execution.rmi.RemoteProcessSupport.lambda$acquire$2(RemoteProcessSupport.java:253)
    at com.intellij.openapi.util.ClassLoaderUtil.computeWithClassLoader(ClassLoaderUtil.java:31)
    at com.intellij.execution.rmi.RemoteUtil.executeWithClassLoader(RemoteUtil.java:207)
    at com.intellij.execution.rmi.RemoteProcessSupport.acquire(RemoteProcessSupport.java:251)
    at com.intellij.execution.rmi.RemoteProcessSupport.acquire(RemoteProcessSupport.java:151)
    at org.jetbrains.idea.maven.server.MavenServerManager.create(MavenServerManager.java:170)
    ... 39 more
Caused by: java.io.EOFException
    at java.base/java.io.DataInputStream.readByte(DataInputStream.java:272)
    at java.rmi/sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:239)
    ... 48 more
2020-06-03 18:35:15,253 [  78257]   WARN -      #org.jetbrains.idea.maven - Cannot reconnect. 
java.lang.RuntimeException: Cannot reconnect.
    at org.jetbrains.idea.maven.server.RemoteObjectWrapper.perform(RemoteObjectWrapper.java:82)
    at org.jetbrains.idea.maven.server.MavenIndexerWrapper.createIndex(MavenIndexerWrapper.java:60)
    at org.jetbrains.idea.maven.indices.MavenIndex.createContext(MavenIndex.java:383)
    at org.jetbrains.idea.maven.indices.MavenIndex.access$300(MavenIndex.java:40)
    at org.jetbrains.idea.maven.indices.MavenIndex$IndexData.<init>(MavenIndex.java:674)
    at org.jetbrains.idea.maven.indices.MavenIndex.doOpen(MavenIndex.java:209)
    at org.jetbrains.idea.maven.indices.MavenIndex.open(MavenIndex.java:176)
    at org.jetbrains.idea.maven.indices.MavenIndex.<init>(MavenIndex.java:141)
    at org.jetbrains.idea.maven.indices.MavenIndices.load(MavenIndices.java:58)
    at org.jetbrains.idea.maven.indices.MavenIndices.<init>(MavenIndices.java:46)
    at org.jetbrains.idea.maven.indices.MavenIndicesManager.ensureInitialized(MavenIndicesManager.java:102)
    at org.jetbrains.idea.maven.indices.MavenIndicesManager.getIndicesObject(MavenIndicesManager.java:85)
    at org.jetbrains.idea.maven.indices.MavenIndicesManager.createIndexForLocalRepo(MavenIndicesManager.java:174)
    at org.jetbrains.idea.maven.indices.MavenProjectIndicesManager$3.run(MavenProjectIndicesManager.java:108)
    at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:333)
    at com.intellij.util.ui.update.MergingUpdateQueue.execute(MergingUpdateQueue.java:323)
    at com.intellij.util.ui.update.MergingUpdateQueue.lambda$flush$1(MergingUpdateQueue.java:273)
    at com.intellij.util.ui.update.MergingUpdateQueue.flush(MergingUpdateQueue.java:287)
    at com.intellij.util.ui.update.MergingUpdateQueue.run(MergingUpdateQueue.java:242)
    at com.intellij.util.concurrency.QueueProcessor.runSafely(QueueProcessor.java:232)
    at com.intellij.util.Alarm$Request.runSafely(Alarm.java:367)
    at com.intellij.util.Alarm$Request.run(Alarm.java:357)
    at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
    at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
    at com.intellij.util.concurrency.SchedulingWrapper$MyScheduledFutureTask.run(SchedulingWrapper.java:220)
    at com.intellij.util.concurrency.BoundedTaskExecutor.doRun(BoundedTaskExecutor.java:222)
    at com.intellij.util.concurrency.BoundedTaskExecutor.access$200(BoundedTaskExecutor.java:29)
    at com.intellij.util.concurrency.BoundedTaskExecutor$1.execute(BoundedTaskExecutor.java:201)
    at com.intellij.util.ConcurrencyUtil.runUnderThreadName(ConcurrencyUtil.java:210)
    at com.intellij.util.concurrency.BoundedTaskExecutor$1.run(BoundedTaskExecutor.java:190)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.rmi.RemoteException: Cannot start maven service; nested exception is: 
    java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is: 
    java.net.ConnectException: Connection refused (Connection refused)
    at org.jetbrains.idea.maven.server.MavenServerManager.create(MavenServerManager.java:182)
    at org.jetbrains.idea.maven.server.MavenServerManager.create(MavenServerManager.java:83)
    at org.jetbrains.idea.maven.server.RemoteObjectWrapper.getOrCreateWrappee(RemoteObjectWrapper.java:41)
    at org.jetbrains.idea.maven.server.MavenServerManager$3.create(MavenServerManager.java:427)
    at org.jetbrains.idea.maven.server.MavenServerManager$3.create(MavenServerManager.java:423)
    at org.jetbrains.idea.maven.server.RemoteObjectWrapper.getOrCreateWrappee(RemoteObjectWrapper.java:41)
    at org.jetbrains.idea.maven.server.MavenIndexerWrapper.getRemoteId(MavenIndexerWrapper.java:142)
    at org.jetbrains.idea.maven.server.MavenIndexerWrapper.lambda$createIndex$0(MavenIndexerWrapper.java:60)
    at org.jetbrains.idea.maven.server.RemoteObjectWrapper.perform(RemoteObjectWrapper.java:76)
    ... 32 more
Caused by: java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is: 
    java.net.ConnectException: Connection refused (Connection refused)
    at java.rmi/sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:623)
    at java.rmi/sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:209)
    at java.rmi/sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:196)
    at java.rmi/sun.rmi.server.UnicastRef.newCall(UnicastRef.java:343)
    at java.rmi/sun.rmi.registry.RegistryImpl_Stub.lookup(RegistryImpl_Stub.java:116)
    at com.intellij.execution.rmi.RemoteProcessSupport.lambda$acquire$2(RemoteProcessSupport.java:253)
    at com.intellij.openapi.util.ClassLoaderUtil.computeWithClassLoader(ClassLoaderUtil.java:31)
    at com.intellij.execution.rmi.RemoteUtil.executeWithClassLoader(RemoteUtil.java:207)
    at com.intellij.execution.rmi.RemoteProcessSupport.acquire(RemoteProcessSupport.java:251)
    at com.intellij.execution.rmi.RemoteProcessSupport.acquire(RemoteProcessSupport.java:151)
    at org.jetbrains.idea.maven.server.MavenServerManager.create(MavenServerManager.java:170)
    ... 40 more
Caused by: java.net.ConnectException: Connection refused (Connection refused)
    at java.base/java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
    at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
    at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
    at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:403)
    at java.base/java.net.Socket.connect(Socket.java:609)
    at java.base/java.net.Socket.connect(Socket.java:558)
    at java.base/java.net.Socket.<init>(Socket.java:454)
    at java.base/java.net.Socket.<init>(Socket.java:231)
    at com.intellij.execution.rmi.RemoteServer$1.createSocket(RemoteServer.java:121)
    at java.rmi/sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:617)

I know this issue was posted several times, but i already tried all the suggested things.

I made sure that my hosts file only contains 127.0.0.1 localhost. Also checked via

##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting.  Do not change this entry.
##

127.0.0.1 localhost
# 255.255.255.255   broadcasthost
# ::1             localhost

also checked via

ping localhost

and cache refresh that localhost really gets converted into 127.0.0.1

furthermore i updated maven to version 3.6.3 and and JDK to 1.8.0_251. I ran mvn install via terminal exactly with these versions of maven and JDK and it worked out pretty fine.

I also checked the firewall, i could not see any blocked call (anyways on terminal it was working).

some more configs:
maven version
maven version

maven jdk importer
maven jdk importer

java versions
java version

intelliJ version
intellJ version Here i also changed the version from 11.0.7 to 1.8.0_251 (via Choose Runtime Plugin) with same result.

pom.xml:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.0.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

You can find the whole log here:
https://1drv.ms/u/s!AtxZPsMq8pdpgRcHOmbzc7J3rYXb?e=ttLRWq

Has someone still an idea what else i can do?

Many thanks in advance! best D.

Answer

ESET network protection is known to block localhost connections which is causing RMI to fail with this error:

ution.rmi.RemoteProcessSupport - java.rmi.NotBoundException: _DEAD_HAND_
ution.rmi.RemoteProcessSupport - at sun.rmi.registry.RegistryImpl.lookup(RegistryImpl.java:227)
ution.rmi.RemoteProcessSupport - at com.intellij.execution.rmi.RemoteServer.start(RemoteServer.java:93)
ution.rmi.RemoteProcessSupport - at org.jetbrains.idea.maven.server.RemoteMavenServer36.main(RemoteMavenServer36.java:23)
ution.rmi.RemoteProcessSupport - The cook failed to start due to java.io.EOFException 

Disable ESET or adjust the netwrok protection rules. Contact ESET support for more details or the configuration changes you need to make to allow localhost connections to work.



Source: stackoverflow