Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Èròjà atẹ̀lélànà yii ni a ti fi pamọ́ fọ́jọ́ pípẹ́. Jọ̀wọ́ béèrè ìbéèrè titun bí o bá nílò ìrànwọ́.

Certificate error while accessing a site

praveenshukla10
praveenshukla10
more options

Hi, We are having certificate issues while accessing url https://rmsstage.resolvecloudbase.co.nz We verified that the certificates used by this url are valid and the same certificates are being used by https://rmsstaging.resolvecloudbase.co.nz and this site can be accessed without any issues.

One more thing: After accessing https://rmsstaging.resolvecloudbase.co.nz , when we access https://rmsstaging.resolvecloudbase.co.nz then there are no issues reported until we delete file cert9.db from the Profile Folder. Can you please advise what could be the issue. Thanks Praveen

Hi, We are having certificate issues while accessing url https://rmsstage.resolvecloudbase.co.nz We verified that the certificates used by this url are valid and the same certificates are being used by https://rmsstaging.resolvecloudbase.co.nz and this site can be accessed without any issues. One more thing: After accessing https://rmsstaging.resolvecloudbase.co.nz , when we access https://rmsstaging.resolvecloudbase.co.nz then there are no issues reported until we delete file cert9.db from the Profile Folder. Can you please advise what could be the issue. Thanks Praveen

All Replies (3)

FredMcD
FredMcD
more options

I had no problem with the links. What's your computer system and Firefox version?

Please explain the problem in detail. What happens? What is the exact error messages?

praveenshukla10
praveenshukla10 Ìbéèrè olóhun
more options

Hi, the OS is Windows 10 and the firefox version is Firefox Quantum 66.0.5 (64 bit). I have attached the steps to replicate the issue. If we are using the same certificate for 2 sites, why does it gives warning for one site and works smoothly for the other. I have also attached the screenshots of the steps we are using to replicate the issue. Thanks

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 25 Contributor
more options

Okay, I think what you have demonstrated is that one host is not sending the intermediate certificate(s) needed to complete the chain of trust between the site certificate and the root. However, when Firefox receives the intermediate certificate from the other host, it saves it in cert9.db and uses that to bridge gaps for any hosts that do not send it.

This test confirms the incomplete chain diagnosis: https://www.ssllabs.com/ssltest/analyze.html?d=rmsstage.resolvecloudbase.co.nz

It also says:

  • This server is vulnerable to the Return Of Bleichenbacher's Oracle Threat (ROBOT) vulnerability. Grade set to F.
  • This server is vulnerable to MITM attacks because it supports insecure renegotiation. Grade set to F.

So your configuration may need to be checked in a little more depth than simply adding the missing certificate file!

The other one has some issues as well:

https://www.ssllabs.com/ssltest/analyze.html?d=rmsstaging.resolvecloudbase.co.nz