Firefox does not recognize the last java update and some videos cannot be played and some sites do not load. What to do?

After the last update of Java, whenever checking addons, the report that is given is that the plugins "Java Deployment Toolkit 7.0550.13" and "Java(TM) Platform SE 7 U55" are outdated. Some videosites don´t load at all and some videos simply are not played. Any ideas of what goes on? (BTW, have already checked if the sites are down and no, they are not down).

To avoid confusion:
*http://kb.mozillazine.org/JavaScript_is_not_Java
You can try these steps in case of issues with web pages:
You can reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.
*Hold down the Shift key and left-click the Reload button
*Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
*Press "Command + Shift + R" (Mac)
Clear the cache and cookies only from websites that cause problems.
"Clear the Cache":
*Firefox/Tools > Options > Advanced > Network > Cached Web Content: "Clear Now"
"Remove Cookies" from sites causing problems:
*Firefox/Tools > Options > Privacy > "Use custom settings for history" > Cookies: "Show Cookies"
Start Firefox in <u>[[Safe Mode|Safe Mode]]</u> to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
*Do NOT click the Reset button on the Safe Mode start window.
*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

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