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Comment from Dave Markley on 2011-12-06

2011-12-06T18:01:46Z

I agree with Leo that it is almost always the website's problem, not you or your computer. But, I have found (as many have mentioned) that if the date and time is wrong in your computer, the website certificate's date won't show as valid. What I didn't see anyone say is that if your computer's date and/or time is incorrect, (aside from you changing it, or a 'sloppy' installation of Windows), most likely your CMOS battery is going bad. This is usually a little 'watch' battery on your motherboard. In a desktop PC it's easy to just replace for about $4 from anywhere that sells batteries, just make sure you get the same 'model number' battery as there may be a difference in voltage. In a laptop, it is most likely a watch battery, but some use a tiny capsule or disk-shaped battery soldered to the motherboard - these require professional replacement.

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Comment from Siddharth on 2011-09-30

2011-10-01T05:48:41Z

thank you.just change in time and date helped me

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Comment from Stormy on 2011-09-26

2011-09-26T18:51:39Z

i want to thank you very much on the information posted. I had let a friend use my laptop and when it was return. It was not working as given after reading your posted inregards to website certificate it was a minor thing the computer date was really off.

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Comment from siamak on 2011-05-24

2011-05-24T13:50:56Z

i could solve the problem.
change date & time settings

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Comment from Donna on 2011-05-08

2011-05-08T22:45:49Z

go in to youi date and time on the task bar and make sure the date, especially the year, is right!

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Comment from arif on 2011-03-14

2011-03-14T12:21:16Z

reset the host file in the systems

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Comment from arif on 2011-03-14

2011-03-14T12:19:43Z

check u r date and time and also anti virus is update to to the date because some malwares are blocked that security setting file

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Comment from John Jeffrey Larrett on 2010-06-21

2010-06-21T08:04:08Z

I have read the article - check my clock & still have the problem. My wife has a laptop & we share the same SP via the same modem & she has no problem. I have checked with the website & they assure me the certificate is up to date & valid. I tried to subscribe to your RSS feed but failed. Any other suggestions. Thanks

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Comment from Ramon on 2010-05-19

2010-05-19T17:15:21Z

I am getting the error message you show, when visiting web sites I know are safe, and that I had no problem with a few days ago.
If I visit them on a different pc, no problem, and the support people at the sites cannot replicate my problems.
So what can I do about this?
They are https sites, btw.

Thank you.

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Comment from Goobys on 2010-04-24

2010-04-24T08:06:48Z

Ok i read this article, but i am still confused. I'm sorry i am not very good with computers. I had no idea what a cookie was until today. :/ Everytime i try to log into [Site Removed] it says that 'The security certificate presented by this website has expired or is not yet valid.' You mentioned that above, but how do i fix this problem? I tried enabling my cookie and when i try to log into my account on DA it says that the cookie used to remember my password and username (which were correct) was not remembered. How do I make it remember the cookie? How do i validate the security certificate? I'm so confused. Please help. >_

Security certificates are not related to cookies, and they are not something you can fix. It's an issue with the website you're visiting, and something they have to fix.

24-Apr-2010

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Comment from Ed on 2010-04-21

2010-04-21T14:27:53Z

Leo I love your column. However the phrase: "...but there is enough in place should I want one, that it will currently cause that error." is not very clear. Why will the browser sometimes go automatically to https even though you type http?
Thanks!

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Comment from kiki on 2010-03-17

2010-03-17T21:05:59Z

You were soooo right i changed the date on my comp. becaouse it was dated to last year and now i can log into were i coudnt before yay!! thanx Leo.

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Comment from Teresa on 2010-01-13

2010-01-13T14:43:54Z

I get a certificate error for EVERY website I try to visit. Does this mean my computer has been hijacked?

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Comment from eliot on 2009-12-14

2009-12-15T00:10:11Z

thankyou my comp was dated back to 2002
i dont know why but ive changed it and
hope everything is going to be ok

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Comment from Axel Grude on 2009-10-30

2009-10-30T09:58:02Z

I have that problem on our Company's webmail exchange server ("not issued by trusted authority" and "issued for a different website's address") I have talked to our IT dept. and they can not (or don't want to) change that.
I have tried adding the domain to my trusted sites and to my intranet sites, all to no avail. Surely it must be possible to bypass this for ONE site????????
I have also tried group policy editor, but did not find any suitable option.

It is really ridiculous that I have to click this link every time I need to access my work email! This needs an easy workaround by Microsoft especially for those IT workers who need to access their Intranet stuff remotely.

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Comment from Dwayne on 2009-09-20

2009-09-20T21:34:49Z

Posted by: Rachel at December 6, 2008 8:12 PM
I changed the date on my computer and WOW! that fixed the certificate problem for me. It's an old post but, Thank you Rachel.

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Comment from sheila slater on 2009-06-24

2009-06-24T19:41:38Z

my daughter trying get on facebook and bebo, it is saying security certicate and wont let her sigh in, whats could be the problem

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Comment from Paul on 2009-04-12

2009-04-13T03:39:01Z

I get it on a select few...and in order to help a neice with a governement website (child support) I tried to find out why she gets this same error.

I get it too and my system is totally different than hers.

But also neither of us have trouble with the site when we use anything other than IE.

To me the problem is IE related whether its something I can fix or not.

Solution: Dont use IE if you get this error.
I use both Safari & Firefox often for this reason alone.

Its also one of the top reasons (that and UAC) that I will go Linux or OSX on my next computers.

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Comment from Kayren on 2009-02-28

2009-02-28T22:04:30Z

I tried to get on this website i usually go on quiet regular. I sign in but it keeps saying i am having a certificate problem. I couldn't understand what it meant. Somehow i've done something with the URL. So now its coming up: The requested URL/login/was not found. How do i sort this problem? I would be grateful if you could help me because i don't have a clue? And i need to get back on this site.

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Comment from sudhamol on 2009-01-06

2009-01-07T07:34:30Z

hi leo ,
i read the problem which is faced by other when the access to the desire website because i also face the same problem , now i have one double will this problem prevent to install any new software for eg , i am trying to install the new version of yahoo messanger 9 but i cant do so , can u help me out ...

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Comment from Glenn P. on 2008-12-10

2008-12-10T12:23:43Z

I have another question regarding security certificates. It concerns a button that I see (when I view it in MSIE6.0) on the certificate, labelled "Install Certificate". Why is this button there? I mean, clearly, the certificate works just fine without having been installed (else the web page would fail). Is there any value to installing a web certificate? Is there any case where this would be appropriate???

There are cases, but they're typically very geeky in nature, and not something that the average user ever needs to consider. Essentially it's saying "permanantely trust this certificate", but you should not do this unless you really, absolutely, positively know what you're doing. Cert warnings exist for a reason, and the underlying issues that cause them should be investigated and resolved, not worked around.

- Leo
10-Dec-2008

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Comment from Derus Berg on 2008-12-09

2008-12-10T05:49:00Z

I get this certificate error when i connect remotely to access my Exchange mail on my own 2003 server. I can't figure out what certificate it's talking about

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Comment from Jeffrey on 2008-12-07

2008-12-07T19:30:02Z

If it happens every site you go to, check your date and time on your computer. If your computer's date is off by a certain amount of time, usually I have seen 1 year. In other words if today is 12/7/08 and your computer shows 12/7/07 you will see this error, for nearly every web site you go to.

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Comment from Rachel on 2008-12-06

2008-12-07T04:12:25Z

I have this same error message, but it's for major sites that certainly aren't having a certificate problem (like facebook and ebay). HOw can I simply turn this option off on my computer. I have searched for many answers on computer so far and have tried the following things: Changed Advanced Internet options, lowered security filters, turned off phishing filters, installed the security certificates of the websites that have the error, and added URL's to the "trusted sites" list. None of this has changed anything. And, after each change, I have closed the broswer and restarted it. nothing... Help!

You can't turn this off. In fact, you shouldn't turn this off, since it does indeed imply a problem of some sort. One possibility I was reminded of by my friend Dave Taylor is that the clock on your PC might be wrong.

- Leo
07-Dec-2008

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