erro emissor nfe gratuito

ola, estou com um problemão no meu emissor de nf gratuito, a uns 15 dias ele não abria, dava uma mensagem para atualizar, chamei o técnico ele atualizou, porem ocorreu erro no java, atualizei o java, e começõu a dar erro inesperado:
nested exception is:
javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
AxisFault
faultCode: {http://schemas.xmlsoap.org/soap/envelope/}Server.userException
faultSubcode:
faultString: javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
faultActor:
faultNode:
faultDetail:
{http://xml.apache.org/axis/}stackTrace:javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.ssl.SSLSocketImpl.checkEOF(Unknown Source)
at sun.security.ssl.SSLSocketImpl.checkWrite(Unknown Source)
at sun.security.ssl.AppOutputStream.write(Unknown Source)
at java.io.BufferedOutputStream.flushBuffer(Unknown Source)
at java.io.BufferedOutputStream.flush(Unknown Source)
at java.io.FilterOutputStream.flush(Unknown Source)
at org.apache.commons.httpclient.ChunkedOutputStream.flush(ChunkedOutputStream.java:191)
at org.apache.commons.httpclient.methods.EntityEnclosingMethod.writeRequestBody(EntityEnclosingMethod.java:506)
at org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:2110)
at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:1088)
at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:398)
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
at org.apache.axis.transport.http.CommonsHTTPSender.invoke(CommonsHTTPSender.java:196)
at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)
at org.apache.axis.client.AxisClient.invoke(AxisClient.java:165)
at org.apache.axis.client.Call.invokeEngine(Call.java:2784)
at org.apache.axis.client.Call.invoke(Call.java:2767)
at org.apache.axis.client.Call.invoke(Call.java:2443)
at org.apache.axis.client.Call.invoke(Call.java:2366)
at org.apache.axis.client.Call.invoke(Call.java:1812)
at br.gov.sp.fazenda.dsen.ws.status.NfeStatusServicoSoapStub.nfeStatusServicoNF(NfeStatusServicoSoapStub.java:107)
at br.gov.sp.fazenda.dsen.model.business.WSBusiness.f(WSBusiness.java:367)
at br.gov.sp.fazenda.dsen.model.business.WSBusiness.servico(WSBusiness.java:102)
at br.gov.sp.fazenda.dsen.model.business.util.ConsultaStatusServicoHelper.consultarStatusServico(ConsultaStatusServicoHelper.java:35)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness.enviarLote(EnvioBusiness.java:261)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156.CGLIB$enviarLote$0(<generated>)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156$$FastClassByCGLIB$$a5856dcc.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167)
at br.gov.sp.fazenda.dsge.model.dao.util.DSGEDAOInterceptorHelper.intercept(DSGEDAOInterceptorHelper.java:55)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156.enviarLote(<generated>)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness.fecharEnviarLote(EnvioBusiness.java:211)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156.CGLIB$fecharEnviarLote$2(<generated>)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156$$FastClassByCGLIB$$a5856dcc.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167)
at br.gov.sp.fazenda.dsge.model.dao.util.DSGEDAOInterceptorHelper.intercept(DSGEDAOInterceptorHelper.java:66)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156.fecharEnviarLote(<generated>)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness.a(EnvioBusiness.java:146)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness.montarLote(EnvioBusiness.java:104)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156.CGLIB$montarLote$1(<generated>)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156$$FastClassByCGLIB$$a5856dcc.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167)
at br.gov.sp.fazenda.dsge.model.dao.util.DSGEDAOInterceptorHelper.intercept(DSGEDAOInterceptorHelper.java:66)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156.montarLote(<generated>)
at br.gov.sp.fazenda.dsen.model.facade.DocumentoFacade.enviarLote(DocumentoFacade.java:546)
at br.gov.sp.fazenda.dsen.controller.EnviarNotaFiscalController$1.doInBackground(EnviarNotaFiscalController.java:128)
at javax.swing.SwingWorker$1.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at javax.swing.SwingWorker.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.ssl.Alerts.getSSLException(Unknown Source)
at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
at sun.security.ssl.Handshaker.processLoop(Unknown Source)
at sun.security.ssl.Handshaker.process_record(Unknown Source)
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source)
at sun.security.ssl.AppOutputStream.write(Unknown Source)
at java.io.BufferedOutputStream.flushBuffer(Unknown Source)
at java.io.BufferedOutputStream.flush(Unknown Source)
at java.io.FilterOutputStream.flush(Unknown Source)
at org.apache.commons.httpclient.ChunkedOutputStream.flush(ChunkedOutputStream.java:191)
at sun.nio.cs.StreamEncoder.implFlush(Unknown Source)
at sun.nio.cs.StreamEncoder.flush(Unknown Source)
at java.io.OutputStreamWriter.flush(Unknown Source)
at java.io.PrintWriter.flush(Unknown Source)
at java.io.BufferedWriter.flush(Unknown Source)
at org.apache.axis.SOAPPart.writeTo(SOAPPart.java:270)
at org.apache.axis.Message.writeTo(Message.java:539)
at org.apache.axis.transport.http.CommonsHTTPSender$MessageRequestEntity.writeRequest(CommonsHTTPSender.java:841)
at org.apache.commons.httpclient.methods.EntityEnclosingMethod.writeRequestBody(EntityEnclosingMethod.java:499)
... 47 more
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
at sun.security.validator.Validator.validate(Unknown Source)
at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
... 68 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
at java.security.cert.CertPathBuilder.build(Unknown Source)
... 74 more

{http://xml.apache.org/axis/}hostname:Cliente-PC

javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at org.apache.axis.AxisFault.makeFault(AxisFault.java:101)
at org.apache.axis.transport.http.CommonsHTTPSender.invoke(CommonsHTTPSender.java:301)
at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)
at org.apache.axis.client.AxisClient.invoke(AxisClient.java:165)
at org.apache.axis.client.Call.invokeEngine(Call.java:2784)
at org.apache.axis.client.Call.invoke(Call.java:2767)
at org.apache.axis.client.Call.invoke(Call.java:2443)
at org.apache.axis.client.Call.invoke(Call.java:2366)
at org.apache.axis.client.Call.invoke(Call.java:1812)
at br.gov.sp.fazenda.dsen.ws.status.NfeStatusServicoSoapStub.nfeStatusServicoNF(NfeStatusServicoSoapStub.java:107)
at br.gov.sp.fazenda.dsen.model.business.WSBusiness.f(WSBusiness.java:367)
at br.gov.sp.fazenda.dsen.model.business.WSBusiness.servico(WSBusiness.java:102)
at br.gov.sp.fazenda.dsen.model.business.util.ConsultaStatusServicoHelper.consultarStatusServico(ConsultaStatusServicoHelper.java:35)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness.enviarLote(EnvioBusiness.java:261)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156.CGLIB$enviarLote$0(<generated>)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156$$FastClassByCGLIB$$a5856dcc.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167)
at br.gov.sp.fazenda.dsge.model.dao.util.DSGEDAOInterceptorHelper.intercept(DSGEDAOInterceptorHelper.java:55)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156.enviarLote(<generated>)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness.fecharEnviarLote(EnvioBusiness.java:211)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156.CGLIB$fecharEnviarLote$2(<generated>)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156$$FastClassByCGLIB$$a5856dcc.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167)
at br.gov.sp.fazenda.dsge.model.dao.util.DSGEDAOInterceptorHelper.intercept(DSGEDAOInterceptorHelper.java:66)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156.fecharEnviarLote(<generated>)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness.a(EnvioBusiness.java:146)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness.montarLote(EnvioBusiness.java:104)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156.CGLIB$montarLote$1(<generated>)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156$$FastClassByCGLIB$$a5856dcc.invoke(<generated>)
at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:167)
at br.gov.sp.fazenda.dsge.model.dao.util.DSGEDAOInterceptorHelper.intercept(DSGEDAOInterceptorHelper.java:66)
at br.gov.sp.fazenda.dsen.model.business.EnvioBusiness$$EnhancerByCGLIB$$4bf5e156.montarLote(<generated>)
at br.gov.sp.fazenda.dsen.model.facade.DocumentoFacade.enviarLote(DocumentoFacade.java:546)
at br.gov.sp.fazenda.dsen.controller.EnviarNotaFiscalController$1.doInBackground(EnviarNotaFiscalController.java:128)
at javax.swing.SwingWorker$1.call(Unknown Source)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at javax.swing.SwingWorker.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.ssl.SSLSocketImpl.checkEOF(Unknown Source)
at sun.security.ssl.SSLSocketImpl.checkWrite(Unknown Source)
at sun.security.ssl.AppOutputStream.write(Unknown Source)
at java.io.BufferedOutputStream.flushBuffer(Unknown Source)
at java.io.BufferedOutputStream.flush(Unknown Source)
at java.io.FilterOutputStream.flush(Unknown Source)
at org.apache.commons.httpclient.ChunkedOutputStream.flush(ChunkedOutputStream.java:191)
at org.apache.commons.httpclient.methods.EntityEnclosingMethod.writeRequestBody(EntityEnclosingMethod.java:506)
at org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:2110)
at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:1088)
at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:398)
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
at org.apache.axis.transport.http.CommonsHTTPSender.invoke(CommonsHTTPSender.java:196)
... 41 more
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.ssl.Alerts.getSSLException(Unknown Source)
at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
at sun.security.ssl.Handshaker.processLoop(Unknown Source)
at sun.security.ssl.Handshaker.process_record(Unknown Source)
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source)
at sun.security.ssl.AppOutputStream.write(Unknown Source)
at java.io.BufferedOutputStream.flushBuffer(Unknown Source)
at java.io.BufferedOutputStream.flush(Unknown Source)
at java.io.FilterOutputStream.flush(Unknown Source)
at org.apache.commons.httpclient.ChunkedOutputStream.flush(ChunkedOutputStream.java:191)
at sun.nio.cs.StreamEncoder.implFlush(Unknown Source)
at sun.nio.cs.StreamEncoder.flush(Unknown Source)
at java.io.OutputStreamWriter.flush(Unknown Source)
at java.io.PrintWriter.flush(Unknown Source)
at java.io.BufferedWriter.flush(Unknown Source)
at org.apache.axis.SOAPPart.writeTo(SOAPPart.java:270)
at org.apache.axis.Message.writeTo(Message.java:539)
at org.apache.axis.transport.http.CommonsHTTPSender$MessageRequestEntity.writeRequest(CommonsHTTPSender.java:841)
at org.apache.commons.httpclient.methods.EntityEnclosingMethod.writeRequestBody(EntityEnclosingMethod.java:499)
... 47 more
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
at sun.security.validator.Validator.validate(Unknown Source)
at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
... 68 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
at java.security.cert.CertPathBuilder.build(Unknown Source)
... 74 more
já mandei formatar, e reinstalar o programa emissor de nfe e o java, mas permanece o mesmo problema. alguém por favor pode me ajudar?

Bom dia, Juliana Graziela Minetto

O que funcionou no meu caso foi desinstalar o JAVA 8 e instalar o JAVA7 , após a instalação, baixei o nível de segurança, dentro do Java, para médio. Não se esqueça de reiniciar o computador após instalação.

link para download: https://www.java.com/pt_br/download/manual_java7.jsp

Atenciosamente!