- Thread Author
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- #1
I have 9 PC's in my home. 7 are running Win7 64bit and 2 are running Win8.1 32bit. All PC's are running Bitdefender Antivirus Plus 2016. All of the PC's have the latest Win updates from Microsoft and Bitdefender updates.
On 1 computer, there is one (and only one) webpage that reports an invalid security certificate. I am having this problem using IE11 and using Chrome. Every time I try to access the webpage for Lionel trains support. Since I'm new on the forum, I can't post the actual link. Let's just say it has "lionelsupport" and "com." On this PC using IE11, I get a message "There is a problem with this website's security certificate." If I continue to the website and display certificate info, the certificate issuer is shown as: Untrusted Bitdefender CA. The valid dates are 8/21/2015 to 8/21/2018 and my computer has the correct date and time. On the Certification Path tab, it states: This certificate is OK.
I ran a repair on Bitdefender and that did not fix the problem. I completely uninstalled and then reinstalled Bitdefender, and I still have the same problem.
Given that I have completely uninstalled and reinstalled Bitdefender on this computer, and I have 8 other PC's also running Bitdefender that don't have this problem, I am thinking that this is a Windows problem.
I have searched and not been able to find any references to this type of problem. I'm hoping someone here may have some knowledge or experience with this type of problem.. I really don't want to have to do a complete Windows reinstall.
On 1 computer, there is one (and only one) webpage that reports an invalid security certificate. I am having this problem using IE11 and using Chrome. Every time I try to access the webpage for Lionel trains support. Since I'm new on the forum, I can't post the actual link. Let's just say it has "lionelsupport" and "com." On this PC using IE11, I get a message "There is a problem with this website's security certificate." If I continue to the website and display certificate info, the certificate issuer is shown as: Untrusted Bitdefender CA. The valid dates are 8/21/2015 to 8/21/2018 and my computer has the correct date and time. On the Certification Path tab, it states: This certificate is OK.
I ran a repair on Bitdefender and that did not fix the problem. I completely uninstalled and then reinstalled Bitdefender, and I still have the same problem.
Given that I have completely uninstalled and reinstalled Bitdefender on this computer, and I have 8 other PC's also running Bitdefender that don't have this problem, I am thinking that this is a Windows problem.
I have searched and not been able to find any references to this type of problem. I'm hoping someone here may have some knowledge or experience with this type of problem.. I really don't want to have to do a complete Windows reinstall.
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- Jul 4, 2015
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- 8,998
Bitdefender does SSL scanning so it inserts it's own SSL certificate. It sounds like that cert might be missing from the Windows Cert store. You can fix this is a few ways.
On a working computer
- Go into BitDefender and disable SSL scanning. (Less secure)
- See if the Cert is in the install folder for Bit Defender and add it to the correct store
- Look on a working computer and export the cert and copy and import to the malfunctioning computer
On a working computer
- Press Windows key + r
- Type mmc
- Select File > Add/remove snap-ins
- Add Certificate >> Add >> Computer Account >> Local Computer
- It will probably be in Personal > Certificates or Trusted Root CA > Certificates
- Once you find it double click the certificate and go to the details tab
- Click Copy to File
- The DER... (.CER) file is fine
- Copy the file to your other computer
- Open the Certificate snap-in again on the target computer
- Expand the cert folder for example Personal > Certificates
- Right click Certificates and select Import... browse to the .CER file and import
- That should be it, you may need to reboot after
- Thread Author
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- #3
Neemobeer, thanks for your suggestion.
Unfortunately, it did not work.
I successfully exported the certificate Bitdefender Personal CA Net-Defender from a PC that is not having the problem. I successfully imported the certificate on the PC having the problem. There was already a Bitdefender Personal CA Net-Defender certificate on the computer. So, now I have 2 with the only apparent difference being their expiration dates (1/28/2026 vs. 11/25/2025). I rebooted the PC and still have the problem.
Should I have deleted the certificate that was already on the problem PC? I wasn't comfortable doing that since it might create other problems. I figured having 2 of the same certificate wouldn't do any harm. Or, could the certificate that was already on the PC be corrupt?
Unfortunately, it did not work.
I successfully exported the certificate Bitdefender Personal CA Net-Defender from a PC that is not having the problem. I successfully imported the certificate on the PC having the problem. There was already a Bitdefender Personal CA Net-Defender certificate on the computer. So, now I have 2 with the only apparent difference being their expiration dates (1/28/2026 vs. 11/25/2025). I rebooted the PC and still have the problem.
Should I have deleted the certificate that was already on the problem PC? I wasn't comfortable doing that since it might create other problems. I figured having 2 of the same certificate wouldn't do any harm. Or, could the certificate that was already on the PC be corrupt?
- Joined
- Jul 4, 2015
- Messages
- 8,998
I would export the old one just so you have it before deleting it. I'm installing Bit Defender in a VM so I can get a better idea of the SSL scanning.
You can also go to the web site that is broken and click on the broken lock and details and see if there is a certificate chain and if there is a specific cert that is broken.
You can also go to the web site that is broken and click on the broken lock and details and see if there is a certificate chain and if there is a specific cert that is broken.
- Thread Author
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- #5
Now this is weird...
I did some experimenting. First I tried adding the website to the Bitdefender Whitelist. I still had the problem. I removed it from the Whitelist and then disabled SSL scanning. No surprise...the website loaded with no problems. I re-enabled SSL scanning, and the website still came up with no problems.
I went back in to Bitdefender to make sure I had re-enabled SSL scanning. And, yes it was enabled. Just to be sure, I shut down the PC and restarted it. I checked Bitdefender and it shows SSL scanning is enabled. The website loaded with no problem.
Somehow, it appears that disabling and then re-enabling SSL scanning has solved the problem. It's a mystery to me, but I'm happy that the problem is gone.
Thanks for your help Neebobeer.
I did some experimenting. First I tried adding the website to the Bitdefender Whitelist. I still had the problem. I removed it from the Whitelist and then disabled SSL scanning. No surprise...the website loaded with no problems. I re-enabled SSL scanning, and the website still came up with no problems.
I went back in to Bitdefender to make sure I had re-enabled SSL scanning. And, yes it was enabled. Just to be sure, I shut down the PC and restarted it. I checked Bitdefender and it shows SSL scanning is enabled. The website loaded with no problem.
Somehow, it appears that disabling and then re-enabling SSL scanning has solved the problem. It's a mystery to me, but I'm happy that the problem is gone.
Thanks for your help Neebobeer.