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Did you download Java from here?<br />
<a href="http://java.com/en/download/index.jsp" rel="ugc">http://java.com/en/download/index.jsp</a>
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Computer not in use for 3 months. &nbsp;On returning to it, I wanted to upgrade my Java but the download installer was reported 'corrupt' (also reports AVG download as infected with virus).<br />
I know neither report is true. &nbsp;System is Windows Vista with Moxilla Firefox, Google Chrome and Internet Explorer. &nbsp;Is there any way of removing the blocks?
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Computer not in use for 3 months.  On returning to it, I wanted to upgrade my Java but the download installer was reported 'corrupt' (also reports AVG download as infected with virus).
I know neither report is true.  System is Windows Vista with Moxilla Firefox, Google Chrome and Internet Explorer.  Is there any way of removing the blocks?

How to download Java

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.