Solved Mozilla says unsecured connection for every website except a

October 26, 2016 at 19:58:15
Specs: Windows XP
I managed to get an IBM ThinkCenter (2001 model) w/XP usable again by removing programs and folders of BS. Used the Lucent internal modem out of my old HP Pavilion w/ME to access my ATT-Yahoo dial-up. IE refused to lauch (error) yet managed to get on-line using Mozilla Firefox. That was cool until I tried accessing my Yahoo Mail, MSN News, Google or anything else since Mozilla says they're unsecured with bogus certificates. For some reason it alowed me to access Softpedia, Driver Support's system check and Computing.Net. Is there a work-around to stop this nonsense? I'm PC ignorant as heck so any advice would be greatly appreciated.

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October 26, 2016 at 21:05:13
If you are using old version Mozilla FF then update it. This may fix some issues with recognizing certificates.
Run Malwarebytes to check for malware causing issues.
Run Windows Update.

You have to be a little bit crazy to keep you from going insane.

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October 27, 2016 at 00:56:03
✔ Best Answer
Very likely you need to set the computer clock and probably install a new cmos battery. A website's security certificate is valid for a fixed period of time. If the date on your computer clock isn't within that time period you will often get a certificate error as, for some reason, it assumes your clock is correct.

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October 27, 2016 at 18:48:23
I did install a new battery to get it running and changed the time & date. Had my power going off/on several times last night which made the time & date revert back to 01/01/2001. I didn't notice that until reading your reply here this morning. Changed it back and now everything works, including the DVD/CD-RW which wouldn't read them before.
This tower was in use until 7/22/15 by a day trader so probably has all the available updates. It has AVG, ZoneAlarm and Malwarebytes so will use those to check for viruses, etc. For some reason IE won't launch so will be working on that next.
Thank you for the great advice!

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October 27, 2016 at 20:12:25
It doesn't seem like the date would revert back with a new battery even with a power outage. Well at least it's working now. Just keep an eye on its system clock.

The highest IE version that works with XP is IE 8. If you don't have that version you should upgrade to it, although many sites will tell you it's outdated and won't load properly. And it's not supported by MS anymore so there's no updates.

If you already have IE 8 try clicking on 'tools' from its dropdown menu, then 'internet options', then 'advanced', then down at the bottom click 'reset' to 'reset internet explorer settings'. Maybe that will fix it.

If you need to update to IE 8 the files may still be on MS's site somewhere. If not you'll need to google these 3 files to find a download:


The first is the IE 8 installation file. The second is a cumulative update file for IE 8 and the third is a security update they deemed so critical they reopened IE 8 support for XP just to post it.

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