Hoffaz,
1.How do I enable Java through the Control Panel :
https://www.java.com/en/download/help/enable_panel.xml
2.How do I clear the Java cache:
https://www.java.com/en/download/help/plugin_cache.xml
3.How do I enable Java in my web browser:
How do I enable Java in my web browser?
If the above mentioned jobs fail follow the final resource as mentioned below.
Delete your JRE on your client system and install corresponding versions of the JRE(Java Runtime Environment).
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Mutti