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I checked "block suspected forgeries" but when I close Firefox and reopen it the checkmark is gone, why?

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When I go to "Tools">"Options"> and put a check mark in "Block Reported Web Forgeries" then select "OK" and return to browsing, then close Firefox then re-open Firefox and go back to "Tools">"Options"> and "Block Reported Web Forgeries" the check mark is gone in that box. Why?

When I go to "Tools">"Options"> and put a check mark in "Block Reported Web Forgeries" then select "OK" and return to browsing, then close Firefox then re-open Firefox and go back to "Tools">"Options"> and "Block Reported Web Forgeries" the check mark is gone in that box. Why?

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See:

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).

  • Don't make any changes on the Safe mode start window.

See:


Other things that need your attention:

Your above posted system details show outdated plugin(s) with known security and stability risks that you should update.

  • Java Plug-in 1.6.0_13 for Netscape Navigator (DLL Helper)

Update the Java plugin to the latest version.