Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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Why do I keep getting this: a248.e.akamai.net:443 uses an invalid security certificate The certificate expired on 11/24/2010 3:13 PM Error code: sec_error_expired_certificate

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TRBHSK

When we log on to Firefox, we get this in a large pop-up; we also get something about updating plug-ins. Does this signify some serious problem or virus? How do I get this to stop popping up?

When we log on to Firefox, we get this in a large pop-up; we also get something about updating plug-ins. Does this signify some serious problem or virus? How do I get this to stop popping up?

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Check the date and time in the clock on your computer: (double) click the clock icon on the Windows Taskbar. See Secure connection and security warning error pages in Firefox