java 7 application blocked for security failed to validate c

[crua9]

I'm trying to install this game for the first time, and I'm having a hard time doing so. I keep getting an error. The thing says

application blocked for security
failed to validate certificate
the application will not be executed.

I tried this how to, and it didn't work. http://forum.wurmonline.com/index.php?/ ... te-solved/

The more info says.

java.io.IOException: Invalid keystore format
at sun.security.provider.JavaKeyStore.engineLoad(Unknown Source)
at sun.security.provider.JavaKeyStore$JKS.engineLoad(Unknown Source)
at java.security.KeyStore.load(Unknown Source)
at com.sun.deploy.security.RootCertStore$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.deploy.security.RootCertStore.loadCertStore(Unknown Source)
at com.sun.deploy.security.RootCertStore.load(Unknown Source)
at com.sun.deploy.security.RootCertStore.load(Unknown Source)
at com.sun.deploy.security.ImmutableCertStore.load(Unknown Source)
at com.sun.deploy.security.LazyRootStore.loadJREStore(Unknown Source)
at com.sun.deploy.security.LazyRootStore.getTrustAnchors(Unknown Source)
at com.sun.deploy.security.TrustDecider.getValidationState(Unknown Source)
at com.sun.deploy.security.TrustDecider.validateChain(Unknown Source)
at com.sun.deploy.security.TrustDecider.isAllPermissionGranted(Unknown Source)
at com.sun.javaws.security.AppPolicy.grantUnrestrictedAccess(Unknown Source)
at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResourcesHelper(Unknown Source)
at com.sun.javaws.security.JNLPSignedResourcesHelper.checkSignedResources(Unknown Source)
at com.sun.javaws.Launcher.prepareResources(Unknown Source)
at com.sun.javaws.Launcher.prepareAllResources(Unknown Source)
at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)
at com.sun.javaws.Launcher.launch(Unknown Source)
at com.sun.javaws.Main.launchApp(Unknown Source)
at com.sun.javaws.Main.continueInSecureThread(Unknown Source)
at com.sun.javaws.Main.access$000(Unknown Source)
at com.sun.javaws.Main$1.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

[loftar]

"Invalid keystore format" sounds like your Java keystore has managed to get corrupted however. I would think it should help if you remove the keystore and let Java rebuild it, but I don't know where it's stored on Windows.

Alternatively, it could be a keystore built into the Java installation as well (with root certificates and whatnot), in which case it could possibly help if you simply reinstall Java.

[crua9]

"Invalid keystore format" sounds like your Java keystore has managed to get corrupted however. I would think it should help if you remove the keystore and let Java rebuild it, but I don't know where it's stored on Windows.

Alternatively, it could be a keystore built into the Java installation as well (with root certificates and whatnot), in which case it could possibly help if you simply reinstall Java.

I've tried reinstalling Java. Java seems to work with Wurum

[MagicManICT]

At this point I'm assuming you're using Windows. Did you use a cleanup utility after you uninstalled Java to make sure there weren't any bits around that could continue to corrupt a fresh install? Oracle has an uninstall tool for Java (http://www.java.com/en/download/faq/uni ... olinfo.xml), but I'm not sure how effective it is. Other utilities like CCleaner usually do a good job of cleaning up. There's a couple of Java specific tools that will clean out any user data that uninstallers might miss.