JOSM-Probleme mit Verbindungsaufbau

Moin!

ich habe nach längerer Zeit wieder JOSM starten wollen und bekomme folgende Meldung:

2017-05-11␣08:38:40.662␣WARNUNG:␣org.openstreetmap.josm.io.OsmApiInitializationE
xception:␣org.openstreetmap.josm.io.OsmTransferException:␣javax.net.ssl.SSLHands
hakeException:␣sun.security.validator.ValidatorException:␣PKIX␣path␣building␣fai
led:␣sun.security.provider.certpath.SunCertPathBuilderException:␣unable␣to␣find
valid␣certification␣path␣to␣requested␣target.␣Ursache:␣org.openstreetmap.josm.io
.OsmTransferException:␣javax.net.ssl.SSLHandshakeException:␣sun.security.validat
or.ValidatorException:␣PKIX␣path␣building␣failed:␣sun.security.provider.certpath
.SunCertPathBuilderException:␣unable␣to␣find␣valid␣certification␣path␣to␣request
ed␣target.␣Ursache:␣javax.net.ssl.SSLHandshakeException:␣sun.security.validator.
ValidatorException:␣PKIX␣path␣building␣failed:␣sun.security.provider.certpath.Su
nCertPathBuilderException:␣unable␣to␣find␣valid␣certification␣path␣to␣requested
target.␣Ursache:␣sun.security.validator.ValidatorException:␣PKIX␣path␣building␣f
ailed:␣sun.security.provider.certpath.SunCertPathBuilderException:␣unable␣to␣fin
d␣valid␣certification␣path␣to␣requested␣target.␣Ursache:␣sun.security.provider.c
ertpath.SunCertPathBuilderException:␣unable␣to␣find␣valid␣certification␣path␣to
requested␣target
org.openstreetmap.josm.io.OsmApiInitializationException:␣org.openstreetmap.josm.
io.OsmTransferException:␣javax.net.ssl.SSLHandshakeException:␣sun.security.valid
ator.ValidatorException:␣PKIX␣path␣building␣failed:␣sun.security.provider.certpa
th.SunCertPathBuilderException:␣unable␣to␣find␣valid␣certification␣path␣to␣reque
sted␣target
at␣org.openstreetmap.josm.io.OsmApi.initialize(OsmApi.java:256)
at␣org.openstreetmap.josm.io.OsmApi.initialize(OsmApi.java:194)
at␣org.openstreetmap.josm.io.OsmServerReader.getInputStream(OsmServerRea
der.java:72)
at␣org.openstreetmap.josm.io.OsmServerUserInfoReader.fetchUserInfo(OsmSe
rverUserInfoReader.java:176)
at␣org.openstreetmap.josm.io.MessageNotifier$Worker.run(MessageNotifier.
java:68)
at␣java.util.concurrent.Executors$RunnableAdapter.call(Unknown␣Source)
at␣java.util.concurrent.FutureTask.runAndReset(Unknown␣Source)
at␣java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
access$301(Unknown␣Source)
at␣java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
run(Unknown␣Source)
at␣java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown␣Source)
at␣java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown␣Source)
at␣java.lang.Thread.run(Unknown␣Source)
Caused␣by:␣org.openstreetmap.josm.io.OsmTransferException:␣javax.net.ssl.SSLHand
shakeException:␣sun.security.validator.ValidatorException:␣PKIX␣path␣building␣fa
iled:␣sun.security.provider.certpath.SunCertPathBuilderException:␣unable␣to␣find
valid␣certification␣path␣to␣requested␣target
at␣org.openstreetmap.josm.io.OsmApi.sendRequest(OsmApi.java:700)
at␣org.openstreetmap.josm.io.OsmApi$CapabilitiesCache.updateData(OsmApi.
java:182)
at␣org.openstreetmap.josm.io.CacheCustomContent.updateForce(CacheCustomC
ontent.java:140)
at␣org.openstreetmap.josm.io.CacheCustomContent.updateForceString(CacheC
ustomContent.java:152)
at␣org.openstreetmap.josm.io.CacheCustomContent.updateIfRequiredString(C
acheCustomContent.java:130)
at␣org.openstreetmap.josm.io.OsmApi.initialize(OsmApi.java:212)
...␣11␣more
Caused␣by:␣javax.net.ssl.SSLHandshakeException:␣sun.security.validator.Validator
Exception:␣PKIX␣path␣building␣failed:␣sun.security.provider.certpath.SunCertPath
BuilderException:␣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.startHandshake(Unknown␣Source)
at␣sun.security.ssl.SSLSocketImpl.startHandshake(Unknown␣Source)
at␣sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown␣Source)
at␣sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect
(Unknown␣Source)
at␣sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(Unknown␣Sou
rce)
at␣org.openstreetmap.josm.tools.HttpClient.connect(HttpClient.java:125)
at␣org.openstreetmap.josm.tools.HttpClient.connect(HttpClient.java:75)
at␣org.openstreetmap.josm.io.OsmApi.sendRequest(OsmApi.java:653)
...␣16␣more
Caused␣by:␣sun.security.validator.ValidatorException:␣PKIX␣path␣building␣failed:
sun.security.provider.certpath.SunCertPathBuilderException:␣unable␣to␣find␣vali
d␣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␣Sour
ce)
...␣30␣more
Caused␣by:␣sun.security.provider.certpath.SunCertPathBuilderException:␣unable␣to
find␣valid␣certification␣path␣to␣requested␣target
at␣sun.security.provider.certpath.SunCertPathBuilder.build(Unknown␣Sourc
e)
at␣sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown
Source)
at␣java.security.cert.CertPathBuilder.build(Unknown␣Source)
...␣36␣more

Abschließend kommt der Hinweis auf eine mögliche Proxy-Anpassung.

Habe kurz mit der IT gesprochen und es soll sich nichts in den letzten Wochen geändert haben - auch gibt es keinen Proxy.

Ein Update auf die LatestTested-Version hat auch keine Änderung gebracht.

Kann mir einer von Euch weiterhelfen - vielleicht gibt der Code noch eine andere Ursache her.

Gruß Jan