我是学生，并且在从netacad网站打开check jnlp文件时遇到问题。它给我以下错误
com.sun.deploy.net.faileddownloadexception: unable to load resource: http://localhost/check/pt-assessment-client.jnlp
at com.sun.deploy.net.downloadengine.actiondownload(unknown source)
at com.sun.deploy.net.downloadengine.downloadresource(unknown source)
at com.sun.deploy.cache.resourceproviderimpl.getresource(unknown source)
at com.sun.deploy.cache.resourceproviderimpl.getresource(unknown source)
at com.sun.javaws.launcher.updatefinallaunchdesc(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)
或者它根本就没有启动。
我尝试更新我的java并尝试以前的版本。我还尝试删除广告拦截器并停止了我的防病毒软件，但无济于事。
有没有解决这个问题？