How to fix Firefox and Thunderbird when MozBackup broke it?
Hello.
We are a small family business. My father, the head of the company, really liked MozBackup software and we are using it for a long time right now. About 2 weeks ago we have bought a new PC for our needs, and while i was configuring it for work, i encountered a major problem. I have installed Win7 64bit, all the neccesary drivers and software, including FireFox, ThunderBird and MozBackup. Everything was fine until we used MozBackup. FireFox is now having trouble with certificates - for example he shows issues with untrusted certificates on Mozilla help sites, google etc. Some of the websites are displayed in plain text, especially support pages. Also it doesn't play any youtube videos - they just start to buffer and then an error pops up. Uninstalling Firefox and deleting the profile manually doesn't help, when i run it again it stil has those issues. This stopped after reinstalling the operating system, but i really don't want to do this again. Thunderbird shows that certificate of our private mail server is untrusted, it also has issues with displaying some messages (untrusted also). Every other web browser works just fine. We've checked today and it happened also on our new ultrabook with Windows 10, but when we updated Firefox and restored the profile with MozBackup on our old laptop - it didn't crash like on the other computers. It seems to happen only with freshly installed Firefox and Thunderbird.
Could you help us in any way? Is that caused by new versions of those programs? I used FF 42.0/43.0 and TB 38.4.0. Maybe you could just give me a solution to restore it to default, so it would run like it was just installed? We could then migrate to Firefox Sync with our profiles. We would really appreciate any help from you.
Cheers.
Chosen solution
Did you restore the cert8.db file?
There is security software like Avast and Kaspersky and BitDefender and ESET that intercept secure connections and send their own certificate.
If you can't inspect the certificate via "I Understand the Risks" then try this:
Open the "Add Security Exception" window by pasting this chrome URL in the Firefox location/address bar and check the certificate:
- chrome://pippki/content/exceptionDialog.xul
In the location field of this window type or paste the URL of the website.
- retrieve the certificate via the "Get certificate" button
- click the "View..." button to inspect the certificate in the Certificate Viewer
You can inspect details like the issuer and the certificate chain in the Details tab of the Certificate Viewer. Check who is the issuer of the certificate. If necessary then you can attach a screenshot that shows the certificate viewer.
Read this answer in context 👍 1All Replies (2)
Chosen Solution
Did you restore the cert8.db file?
There is security software like Avast and Kaspersky and BitDefender and ESET that intercept secure connections and send their own certificate.
If you can't inspect the certificate via "I Understand the Risks" then try this:
Open the "Add Security Exception" window by pasting this chrome URL in the Firefox location/address bar and check the certificate:
- chrome://pippki/content/exceptionDialog.xul
In the location field of this window type or paste the URL of the website.
- retrieve the certificate via the "Get certificate" button
- click the "View..." button to inspect the certificate in the Certificate Viewer
You can inspect details like the issuer and the certificate chain in the Details tab of the Certificate Viewer. Check who is the issuer of the certificate. If necessary then you can attach a screenshot that shows the certificate viewer.
Thank you very much for your help. I was able to discover, that NOD32 was responsible for this problem - for some reason Firefox didn't accept his certificates. I assume it was because Firefox was running while instaling NOD/MozBackup messed something with configuration. I reinstalled firefox, thunderbird and NOD and now everything's up and running. Thanks!!!