"The certificate is not trusted because no issuer chain was provided" error in all browsers for all websites.
As it says, Chrome, Firefox, and Internet Explorer all give the certificate error message for any and every website attempted - including the Firefox add-ons page. The specific error is the "no issuer chain was provided".
1) This problem is not on my computer - it is on my mother's computer in another city. Therefore, I cannot attempt every little possibility without flying over there - I'm looking for things I can tell her to do over the phone. The problem started today. I've already given her the list of anti-malware programs to go install and run from here:
https://support.mozilla.org/en-US/questions/982393
Note that, of course, she will have to accept the security certificate override to get to these things - I hope this isn't bad.
2) The problem started after she tried to use Skype, it hung for a very long time and would never log on. So she tried to reinstall it - and she said she clicked through a number of agreement screens and believes she may have installed malicious 3rd party software. This is ridiculous, is Skype now putting malware on people's computers through these bogus 3rd party add-ons at installation? I suppose it is possible Skype was hanging because of some other problem - but she did manage to reinstall Skype and got it to work (but now her internet certificates won't).
3) She has BitDefender. I am aware that it says here:
https://support.mozilla.org/en-US/kb/connection-untrusted-error-message
that she should turn off SSL scanning. She turned it off, it did not solve the problem. She turned it off and restarted, it did not solve the problem. She has had it on for the past 6 months and it has never caused a problem.
4) In addition, BitDefender reported today that it stopped a malicious program called MySearchDial.exe from attempting something it shouldn't. We went through this removal guide:
http://malwaretips.com/blogs/start-mysearchdial-removal/
however, the software MySearchDial was never actually installed into the windows install list, and we did not find any addons/plugins in any of the browser lists (note that Firefox add-ons cannot be accessed with a certificate error, it gives the error message but DOES NOT give you the option to add an exception so you can't access the add-ons). The only thing we found was (a) MySearchDial was default in the IE search engine list, despite there being no add-on, and (b) MySearchDial.exe was in the temp folder (now deleted). I note that I had BitDefender scan the temp folder *before* I deleted MySearchDial.exe, and it claimed no threats were found. What? It was BitDefender that warned me of it in the first place!
5) Time and date are correct.
6) Checked the Win 7 install log, only Skype, Skype Click-to-Call, and (for some reason) Mircosoft Visual Studio 2010 and Visual C++ were installed or altered today. I got paranoid about Click-to-call and asked her to uninstall it, but it didn't solve the problem.
7) The OS is Win7 64bit Home.
Anything beyond endless Malware removal programs (via list linked above) that we should try?
選ばれた解決策
Ok - Malwarebytes fixed it. It turned out VisualBee and Browser SafeGuard were also in there, and Malwarebytes found them and deleted them.
After this happened the certificate errors went away, but she still couldn't connect because the computer was then manually set to a proxy server, but that was easy to fix by going back to automatic detection of settings.
Thank you all for your suggestions.
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I forgot to mention that Windows 7 claims MySearchDial had been added to the temp folder a month ago, not today (it still was never "installed" to the windows uninstall programs list). Not sure whether this matters, if I were writing a virus I'd change the date it claims it was added.
hello, can you have her try attempting to add an exception and then inspecting the issuer section of the certificate. this often contains hints what's the root of the problem:
- when it shows bitdefender the AV is obviously the further place for troubleshooting
- but it might also be due to malware: sendori and fiddler2/Do_NOT_TRUST are some common entries - in case they are present go to the system control panel and uninstall programs like Sendori, BrowserSafeguard, BrowserSafe, SafeGuard and others that sound suspicious and didn't get installed intentionally. in addition run a scan with malwarebytes, which was already recommended in the thread you've named
The only way to know what is going on is to retrieve the certificate and check who is the issuer.
It is always possible that the server doesn't send the full certificate chain (intermediate certificates), so it might help to post a link to this website
Check the date and time in the clock on your computer: (double) click the clock icon on the Windows Taskbar.
Check out why the site is untrusted and click "Technical Details to expand this section.
If the certificate is not trusted because no issuer chain was provided (sec_error_unknown_issuer) then see if you can install this intermediate certificate from another source.
You can retrieve the certificate and check details like who issued certificates and expiration dates of certificates.
- Click the link at the bottom of the error page: "I Understand the Risks"
Let Firefox retrieve the certificate: "Add Exception" -> "Get Certificate".
- Click the "View..." button and inspect the certificate and check who is the issuer of the certificate.
You can see more Details like intermediate certificates that are used in the Details pane.
If "I Understand the Risks" is missing then this page may be opened in an (i)frame and in that case try the right-click context menu and use "This Frame: Open Frame in New Tab".
- Note that some firewalls monitor (secure) connections and that programs like Sendori or FiddlerRoot can intercept connections and send their own certificate instead of the website's certificate.
- Note that it is not recommended to add a permanent exception in cases like this, so only use it to inspect the certificate.
選ばれた解決策
Ok - Malwarebytes fixed it. It turned out VisualBee and Browser SafeGuard were also in there, and Malwarebytes found them and deleted them.
After this happened the certificate errors went away, but she still couldn't connect because the computer was then manually set to a proxy server, but that was easy to fix by going back to automatic detection of settings.
Thank you all for your suggestions.
- Solutions:-
- 1.)Update your Date, Time and Time zone of your computer.
- &/or
- 2.)There may be a Internet monitoring application(SW) like Qustodio, etc installed
in your system.
- See those monitoring apps. are working properly as required. If Yes, ok.
- But even then also you get error in FF-browser...
- Uninstall those monitoring apps., If you are unable to uninstall those apps., then use special 'uninstaller SW' to uninstall it. (you may force unistall it also).
- Now again check your FF-browser (after system restart- if required),
- The error may not occur now.
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