Internet Explorer will not allow access to a website that is secured by using an RSA certificate that has a key length of less than 1024 bits. Two possible solutions: Use certificate auto enrollment to increase the certificate key size. Modify registry settings to allow key lengths less than 1024 bits.

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I have a laptop that consistently has a problem when it accesses a site online. Each and every time I get the same message from the site I am visiting. The message is strange and I have no knowledge of how to correct the implied problem.The message is: “There is a problem with this website’s security. The security certificate presented by this website has expired or is not yet valid.”This message appears when I try to access my email account.The problem is most likely not yours to correct. More often than not, it’s a problem with the website itself.You still need to be careful, though.Let’s look at security certificates on https connections: what they mean and what you should do when faced with messages such as this. Become a and go ad-free! Security certificatesA security certificate, or just “certificate”, is a kind of positive identification for a website as part of.

In many ways, it’s very similar to a ’s license.A driver’s license has three components:. Process: A driver’s license must be obtained from an issuing authority, like a department of motor vehicles or department of licensing. The process includes documenting your identity as well as proving you have the skills to drive.

ID: A driver’s license is used to prove you are who you say you are. Functionality: A driver’s license gives you permission to drive a motor vehicle of some sort.A security certificate for an https website has three similar components:. Process: A certificate must be obtained from an issuing authority. The process includes proving you own the website for which the certificate will be issued.

ID: A certificate is used to prove that the website is the website it claims to be. Functionality: A certificate is used to encrypt the data that site visitors send to and receive from the site.A driver’s license is typically a physical card issued after you pay a fee, provide documentation, and pass a driving test. A security certificate is a blob of encrypted data issued after you pay a fee, provide documentation, and pass an identity verification test. ErrorsHere’s an example of one type of error that we’re talking about, as displayed in Google Chrome:Chrome, in particular, makes errors look big and scary, and even makes it difficult to proceed when you know what you’re doing. (Hint: you start by clicking on” Advanced“.) And yes, sometimes you do want to proceed anyway – but only if you’re certain.Here’s the same error in Internet Explorer:IE makes it easier to continue.You can reproduce this error by going to. There is no http s version of the old “ask-leo.com” (with the dash) site; however, there is enough https support in place that it will try to return something.

That “something” uses an unrelated security certificate, currently the certificate for “secure.pugetsoundsoftware.com”. That’s kind of like using someone else’s driver’s license, and results in the error you see.

Most common: expired certificatesLike driver’s licenses, security certificates come with an expiration date. Typically, they’re only valid for from one to three years, but can last up to ten, I believe. If the website owner fails to renew a certificate before it expires, that’s an error, just like driving with an expired license would be.This is perhaps the most common certificate error we see on any regular basis, and it’s probably the cause of error you’re seeing: “The security certificate presented by this website has expired or is not yet valid”.

(“Not yet valid” covers the case where someone starts using a certificate before they’re supposed to. This is exceptionally rare.)It’s an unfortunate oversight when it happens, but it’s usually corrected very quickly. I know, because I’ve made this error. 🙂 It’s typically safe to ignore the error as long as the expiration date is relatively recent. Misconfigured certificatesThis one bugs me, because it really shows that the website owner doesn’t know how to configure their own server.“” and “” are two different sites, and typically require two different security certificates. Most importantly, a certificate issued for “askleo.com” will not validate “biz.askleo.com” – an error will result.

Think of it as trying to use a driver’s license from someone else who simply happens to have the same last name as you do – it’s not a valid.And yet I see it all the time. The website owner will try to do exactly that, and it won’t work. There are solutions, of course. This situation is generally benign and you can usually safely ignore the error, but still.As a side note, “www.” is so commonly optional that certificates issued for the base name – askleo.com, for example – also validate for the “www.” version of the domain. Self-signed certificatesOfficial certificates must be purchased.

Unofficial certificates – so called “self-signed” certificates – can be generated by just about anyone with a server. They’re “self signed” because rather than being cryptographically signed by a trusted authority, you sign it yourself. That’s sort of like making your own driver’s license out of cardboard and crayon.This is not uncommon among server geeks such as myself, because we’re more interested in the of the connection, not authentication.So unless you’re a server geek or know that’s what you’re expecting, this type of error should be treated like the next: do not proceed. The wrong domainIn the ask-leo.com example I used above, the server returns a valid certificate, but for the wrong domain. There is no certificate for “ask-leo.com”, but the server returns its default certificate, one I’ve installed for “secure.pugetsoundsoftware.com”.The full error message from Chrome explains it well:This server could not prove that it is ask-leo.com; its security certificate is from secure.pugetsoundsoftware.com.

This may be caused by a misconfiguration or an attacker intercepting your connection.Yes, it could be a misconfiguration, but whenever the server responds with the wrong domain name for a secure connection, you need to pay attention. This is very much like someone – intentionally or accidentally – trying to use someone else’s driver’s license.It ain’t right, and you should probably walk away. Usually harmlessMost of the time, certificate problems are simply oversights and omissions on the part of the server administrator. In your case, for example, I’d guess that the administrator of your email server simply failed to update their certificate. If you are seeing this across a family of sites or just one site, it’s possible (in fact it’s even most likely) that it’s a problem on the server’s side. It may be a designer error.

It may even be a malicious site. Ultimately, a problem with a security certificate belongs to the owner of the website. There may be a way to get around it, but you probably need to contact them. A slash through the padlock, the https, or the https appearing in red all mean one thing: something's wrong. Exactly what's wrong can vary. https should be safe as long as the padlock icon indicates that the certificate is correct. That proves that you're visiting the site that you believe you are.

If you don't see it, you should be concerned.Footnotes & references: I’ve also forgotten to renew my driver’s license in the past as well. 🙂: Though finding the expiration date takes understanding how to examine the certificate. While that can be done using your web browser, it’s not something I’m covering here.: Either a separately purchased and issued certificate for each subdomain, or what’s called a “wildcard” certificate, which covers any and all subdomains on the parent domain.

I’ve elected to use the latter with.askleo.com.Posted: July 6, 2016in:This is a major update to an article originally posted December 3, 2008Shortlink:Tagged. New Here?Let me suggest my to get you started.Of course I strongly recommend you - there's a ton of information just waiting for you.Finally, if you just can't find what you're looking for,!

Leo Who?I'm and I've been playing with computers since I took a required programming class in 1976. I spent over 18 years as a software engineer at Microsoft, and after 'retiring' in 2001 I started in 2003 as a place to help you find answers and become more confident using this amazing technology at our fingertips. 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! I get it on a select fewand 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. 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. 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. 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. The article says that the computer user can do nothing about an invalid security certificate. I suppose that there is something the user can do to force the web site to provide a fresh copy of the certificate — possibly also invalid, but at least it will be fresh.Use the “Clear SSL State” option on the Content tab of the Internet Properties applet in the Windows Control Panel.

According to this Windows XP article :“If you click Clear SSL State on the Content tab in the Internet Options dialog box, you can remove all client authentication certificates from the Secure Sockets Layer (SSL) cache.In an SSL session (using ), when a server asks for a certificate to verify that you are who you say you are, the chosen certificate is saved in a cache. The chosen certificate can remain in the cache until you restart your computer. Clicking the Clear SSL State button removes all certificates from the cache without having to restart your computer.”I think this means that to remove the local cache of SSL certificates, you can either reboot the computer or Clear the SSL State.

Is this still correct in later versions of Windows? (There is such an option in my Windows 8.1 installation).Also, does clearing the SSL state in the Internet Options applet affect other browsers such as Google Chrome?. Even if you think you have, if you have the computer unplugged for a long time the watch battery on the board that keeps your settings when the computer is turned off then the chances are somewhat good that you need to replace it as the battery may be too weak.You’re going to get a warning message when you are either booting up or Windows may tell you itself but yes, if you do forget it will make a difference. We have had this happen once or twice in a forums site context and the member’s posts were way off the date.I have been having quite a few issues with Yahoo in regarding ceftificate errors but they have a lot of problems in general, in my opinion lately. I have two theoretically identical computers, one at work and one at home. The clock and date function on the home machine is wonky; it stops a few minutes after re-setting.

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Some time later, a day or three, when I try get on a trusted website, it makes with the duff certificate message. I re-set the date & time and all is well. I copy my work files, take them home on a memory stick and load them up.

When I work on them and save the files, without first re-setting the date & time, it saves them on the date & time that the clock stopped.I go to work and, on Friday, say, I try to over-write the older Thursday work file with the newer-but-older-dated file. It asks if I want to over-write the file saved on Thursday (?) with the file saved on Tuesday; I stop and scratch my head. Thinks; I forgot to copy my newer Thursday work file when I finished it on Thursday evening at home.

Well, no, I didn’t. I thought it was my brain stem, but it is possibly a battery problem. However, if I leave the computer running for some hours it still loses time. Some bug may have developed in that XP installation and stopped the clock function, but I can’t face a full re-installation of my XP. I lost the will to live last time. When accessed via Chrome, this site, a patient portal for the doctors of the University of California at San Diego,?has had a red X over the padlock and the https crossed out ever since I registered many months ago (it also shows as not secure after logging in). I reported this to a representative and suggested the site’s certificate might not be up to date, but the rep simply offered to relay the message to tech support.

That was four months ago, and nothing has changed.Clicking to view Elements and reading the content of various tabs, I see:“This page is insecure (broken HTTPS)” and “The certificate for this site expires in 2017 or later, and the certificate chain contains a certificate signed using SHA-1.”Wiki says of SHA-1:“SHA Secure Hash Algorithm-1 is no longer considered secure against well-funded opponents.”Makes me wonder how well-funded someone would need to be to hack in and get lots and lots of patients’ medical records and other private info.SB. I’m also having a certificate problem, with Comcast Bill Pay. Using IE, FF or Chrome, all basically say “Your connection not secure’ or words to that effect. I contacted Comcast but in the end, no answer. So I opened the Security information using Snap-In (Win 7) and was not able to identify any Comcast Certificate.

Since Comcast denies problems at this point and all three browsers won’t connect, I assumed it was my computer. Now to further complicate the issue, I have absolutely no problems on the other computer connected to the internet with a common connection.

So, it seems to be me. I did run the Certificate check on the alternate computer but told me nothing as far as I can see.So why bother, I suppose. Well, this nags me. I’m supposed to be the computer guy here and I haven’t a clueHere’s the error message on FF:SSLERRORNOCYPHEROVERLAP. Two things: on the pages where this happens, is there an image of my signature in a comment? The “Leo” graphic is getting loaded via http not https.Second thing: could you get me the exact wording of the error message you’re seeing? The signature alone shouldn’t be enough to cause a popup message.Third thing (of two, I know 🙂 – this one’s harder, and optional) On the address bar, immediately to the left of the.

Is an icon that is usually green indicating that there’s a good https connection. In your case it should be some other color. Click on that and you’ll get a message that includes a “Details” link.

Click on “details” and a new pane with a bunch of geeky stuff should open. Can you shoot me a screen shot of that pane? (leo at askleo.com) for how to, if you’re not familiar.

The pane should also have an “x” in the upper right to close it. I think I know what’s happening – and in fact if it goes away by the time you see this perhaps I was able to resolve it.Thanks!. Today (7/18/16), there is no shield. This page (reloaded) does not have a green https while the article about upgrading to Win 10 does and it also has the lock symbol while the others have the generic file symbol. There is no signature on any of the articles and the porn spam article does not have a green https. I am sending a screen shot of the details you asked for but since the shield is gone I cannot send a shot of the error message from that and I cannot see it anywhere else so I am sorry. When I originally got the message, I tried to get a screen shot with the snipping tool but it did not work.Thanks and here you go.

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