Воспроизведение : 1) Открыть jitsi 2) Добавить существующую учётную запись на jabber-сервере 3) Попробовать подключиться Результат: Произошла ошибка во время подключения аккаунта: Имя пользователя: akv@im.***.ru, Имя сервера: Jabber:im.***.ru. Так она виглядит в дебаг режиме: 017-08-23 13:38:32.315 SEVERE: [781] impl.protocol.jabber.OperationSetPersistentPresenceJabberImpl.initializePriorities().2071 Wrong value for resource priority java.lang.NumberFormatException: null at java.lang.Integer.parseInt(Integer.java:454) at java.lang.Integer.parseInt(Integer.java:527) at net.java.sip.communicator.impl.protocol.jabber.OperationSetPersistentPresenceJabberImpl.initializePriorities(OperationSetPersistentPresenceJabberImpl.java:2065) at net.java.sip.communicator.impl.protocol.jabber.OperationSetPersistentPresenceJabberImpl.<init>(OperationSetPersistentPresenceJabberImpl.java:157) at net.java.sip.communicator.impl.protocol.jabber.ProtocolProviderServiceJabberImpl.initialize(ProtocolProviderServiceJabberImpl.java:1589) at net.java.sip.communicator.impl.protocol.jabber.ProtocolProviderFactoryJabberImpl.createService(ProtocolProviderFactoryJabberImpl.java:190) at net.java.sip.communicator.service.protocol.ProtocolProviderFactory.loadAccount(ProtocolProviderFactory.java:995) at net.java.sip.communicator.service.protocol.ProtocolProviderFactory.loadAccount(ProtocolProviderFactory.java:971) at net.java.sip.communicator.impl.protocol.jabber.ProtocolProviderFactoryJabberImpl.installAccount(ProtocolProviderFactoryJabberImpl.java:164) at net.java.sip.communicator.plugin.jabberaccregwizz.JabberAccountRegistrationWizard.installAccount(JabberAccountRegistrationWizard.java:407) at net.java.sip.communicator.plugin.jabberaccregwizz.JabberAccountRegistrationWizard.signin(JabberAccountRegistrationWizard.java:344) at net.java.sip.communicator.plugin.jabberaccregwizz.JabberAccountRegistrationWizard.signin(JabberAccountRegistrationWizard.java:231) at net.java.sip.communicator.impl.gui.main.account.NewAccountDialog$ProtocolSignInThread.run(NewAccountDialog.java:585) at java.lang.Thread.run(Thread.java:745) 2017-08-23 13:38:38.557 SEVERE: [787] util.account.LoginManager.run().442 Failed to register protocol provider. java.lang.NoClassDefFoundError: org/xbill/DNS/TextParseException at net.java.sip.communicator.impl.protocol.jabber.ProtocolProviderServiceJabberImpl.connectUsingSRVRecords(ProtocolProviderServiceJabberImpl.java:834) at net.java.sip.communicator.impl.protocol.jabber.ProtocolProviderServiceJabberImpl.initializeConnectAndLogin(ProtocolProviderServiceJabberImpl.java:680) at net.java.sip.communicator.impl.protocol.jabber.ProtocolProviderServiceJabberImpl.register(ProtocolProviderServiceJabberImpl.java:477) at net.java.sip.communicator.util.account.LoginManager$RegisterProvider.run(LoginManager.java:434) Caused by: java.lang.ClassNotFoundException: org.xbill.DNS.TextParseException at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) at org.apache.felix.framework.ExtensionManager$ExtensionManagerWiring.getClassByDelegation(ExtensionManager.java:1010) at org.apache.felix.framework.BundleWiringImpl.searchImports(BundleWiringImpl.java:1595) at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1525) at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:79) at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:2018) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ... 4 more