Thunderbird, invalid name of certificate problem

[Alex_M]

Hi, I've just bought and installed Kaspersky Total Security on 3 computers and only on one of them I get some kind of problem with a certificate and my mail client Thunderbird. I get a pop-up window every time Windows starts. Please see the screenshot below. How can I fix this issue? Thanks in advance!

[kmscom]

Secure traffic control error in the Mozilla Firefox or Thunderbird How to add the Kaspersky Lab root certificate to the Mozilla Firefox or Thunderbird certificate storage

[Alex_M]

Thanks, kmscom. I've just checked the article, but it doesn't say how to fix this for Thunderbird, but only for Firefox. Can you help me out?

[richbuff]

kmscom posted two links. His second link is repeated here: https://support.kaspersky.com/14620?_ga=2.237883584.1594696241.1559781720-827893231.1559781720#block2 In that link, there are two links to instructions for Firefox. Any better?

[Alex_M]

As I already mentioned, I have problem with Thunderbird, not Firefox. Please look at the screenshot I posted in my first message. It says "Application: Thunderbird" in that pop-up window.

[Flood and Flood's wife]

It says "Application: Thunderbird" in that pop-up window.

Hello Alex_M,

1. Have you set KTS/NETWORK SETTINGS/MOZILLA FIREFOX & THUNDERBIRD?
2. May I ask, is the "url" on the pop up window greyed out due to privacy?
3. It is or is not a "Thunderbird" url?
4. Can you post back an image of the certificate / all screens please?

Please let us know?

[Alex_M]

Hello Alex_M, Have you set KTS/NETWOK SETTINGS/MOZILLA fIREFOX & THUNDERBIRD? Please let us know?

KTS/NETWOK SETTINGS/MOZILLA fIREFOX & THUNDERBIRD. Sorry, but I don't know what this is.

[Flood and Flood's wife]

Hello Alex_M, Go to KTS main application window select ⚙ (gear wheel) select Additional select Network: at the bottom of the screen > Mozilla Firefox & Thunderbird + & does the "How to reconfigure Mozilla Firefox and Thunderbird to make them use the system certificate storage" not work? https://support.kaspersky.com/14620#block3 IF the certificate name is invalid - that's an issue that needs to be looked at by looking at the certifcate, probably, none of the references will address "invalid certificate name? Can you please post back the certifcate as requested above? Have you deleted the certificate? Reset KTS? Rebooted? Rechecked to see if a new certificate has been popluated? Please let us know? Many thanks!

[Alex_M]

Here are my current settings. I don't see Thunderbird here. Please let me know what I should click/do.

[Flood and Flood's wife]

Hello Alex_M, The screen image you posted Mozilla Firefox & Thunderbird Does the "How to reconfigure Mozilla Firefox and Thunderbird to make them use the system certificate storage" not work? https://support.kaspersky.com/14620#block3 IF the certificate name is invalid - that's an issue that needs to be looked at by looking at the certifcate, probably, none of the references will address "invalid certificate name? Can you please post back the certifcate as requested above? Have you deleted the certificate? Reset KTS? Rebooted? Uninstalled Tunderbird? Rebooted? Reinstalled Thunderbird? Rebooted? Rechecked to see if a new certificate has been popluated? Please let us know? Many thanks!

[Alex_M]

Please see below the certificate.

[Flood and Flood's wife]

Hi Alex_M Images are great, thanks! Answers also help us help you....

1. Is the "url" on the pop up window greyed out due to privacy?
2. It is or is not a "Thunderbird" url?
3. * mail.svetlinadesign.com * image of the certificate / all screens please?
4. Are the greyed out areas - due to privacy?
5. Is that certificate on the other 2 devices?

1. If no, as per previous, there's an issue with that certifcate - not with Kaspersky software.

1. Have you deleted the certificate?
2. Reset KTS?
3. Rebooted?
4. Uninstalled Tunderbird?
5. Rebooted?
6. Reinstalled Thunderbird?
7. Rebooted?
8. Rechecked to see if a new certificate has been popluated?
9. Are you using SuperHosting services?

1. If yes, have you contacted them about the certificate?

Please let us know?

[Alex_M]

Hi, Today I had some free time to check this problem again. I resolved it by removing my email account and adding it back. Thanks for looking at this issue anyway.

[DracoBengali]

The link mentions both Firefox and Thunderbird, but only has instructions for how to fix issues with Firefox. How do you actually fix the issue with Thunderbird without having to delete and recreate accounts?

[Flood and Flood's wife]

Hello @DracoBengali,

Welcome!

➡How to reconfigure Mozilla Firefox and Thunderbird to make them use the system certificate storage, applies to both Firefox & Thunderbird. 

1. Have those instructions been followed?
2. Additionally: has Kaspersky Lab root certificate been added to the Mozilla Firefox or Thunderbird certificate storage?
3. Which certificate store is being used? 

Let us know please?

Thank you🙏

Flood🐳