Can't install plugins in spring tool suite 4

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Java

Eclipse

I'm trying to install plugins in the Spring Tools Suite but I get a bunch of errors and can't seem able to fix it.

Here are the errors:

java.net.UnknownHostException: Éste es normalmente un error temporal durante la resolución de nombres de host y significa que el servidor local no recibió una respuesta de un servidor autoritativo (marketplace.eclipse.org)
    at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
    at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
    at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
    at java.net.InetAddress.getAllByName0(InetAddress.java:1276)
    at java.net.InetAddress.getAllByName(InetAddress.java:1192)
    at java.net.InetAddress.getAllByName(InetAddress.java:1126)
    at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45)
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.resolveHostname(DefaultClientConnectionOperator.java:263)
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:162)
    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144)
    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:134)
    at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:610)
    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:445)
    at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:835)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
    at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.performConnect(HttpClientRetrieveFileTransfer.java:1084)
    at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.access$0(HttpClientRetrieveFileTransfer.java:1075)
    at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer$1.performFileTransfer(HttpClientRetrieveFileTransfer.java:1071)
    at org.eclipse.ecf.filetransfer.FileTransferJob.run(FileTransferJob.java:74)
    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)

And the other error:

This is most often caused by a problem with your internet connection. Please check your internet connection and retry.

java.net.UnknownHostException: marketplace.eclipse.org

    at java.net.InetAddress.getAllByName0(InetAddress.java:1280)

    at java.net.InetAddress.getAllByName(InetAddress.java:1192)

    at java.net.InetAddress.getAllByName(InetAddress.java:1126)

    at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45)

    at org.apache.http.impl.conn.DefaultClientConnectionOperator.resolveHostname(DefaultClientConnectionOperator.java:263)

    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:162)

    at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:144)

    at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:134)

    at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:610)

    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:445)

    at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:835)

    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)

    at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.performConnect(HttpClientRetrieveFileTransfer.java:1084)

    at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer.access$0(HttpClientRetrieveFileTransfer.java:1075)

    at org.eclipse.ecf.provider.filetransfer.httpclient4.HttpClientRetrieveFileTransfer$1.performFileTransfer(HttpClientRetrieveFileTransfer.java:1071)

    at org.eclipse.ecf.filetransfer.FileTransferJob.run(FileTransferJob.java:74)

    at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)

What I have tried:

I already tried the usual suspects, in Preferences -> Network Connection I changed the Active Provider to direct, I tried adding -Djava.net.preferIPv4Stack=true to the properties files and path.

The problem occurs at work, an important thing is that in windows console I can't seem to use ping on anything. Not google.com or any other page.