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Norton 360 updated now Thunderbird cant access outlook server

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  • Last reply by zombeh

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Norton 360 updated last night and now Thunderbird isn't working.

I tried logging in to Thunderbird but it kept saying my certificate was wrong and refusing to check my emails. I tried to click "add exception" but it didn't help.

It also kept saying its own homepage was a security risk and blocking it.

I figured it was Nortons new update, but have no idea how to fix it. I turned off Nortons Email Protection, which didn't help. So I uninstalled Thunderbird and reinstalled it.

But now its saying it cannot login to the outlook server when I try to add an email account. I know the information is correct, all I can guess is that Norton is blocking it somehow?

Any idea on how I can fix this?

Norton 360 updated last night and now Thunderbird isn't working. I tried logging in to Thunderbird but it kept saying my certificate was wrong and refusing to check my emails. I tried to click "add exception" but it didn't help. It also kept saying its own homepage was a security risk and blocking it. I figured it was Nortons new update, but have no idea how to fix it. I turned off Nortons Email Protection, which didn't help. So I uninstalled Thunderbird and reinstalled it. But now its saying it cannot login to the outlook server when I try to add an email account. I know the information is correct, all I can guess is that Norton is blocking it somehow? Any idea on how I can fix this?

Chosen solution

Norton controls Firewall - please check Is Thunderbird set up as an allowed program ?

I also located this info which should help. https://community.norton.com/en/forums/auto-update-norton-360-v2449067835-now-causes-security-exception-thunderbird

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Correction: It wasn't asking for a certificate, it was asking to "Add Security Exception." When I click "Confirm Security Exception" it just takes me to a page with a bunch of information, but doesn't fix anything. I added an image.

(Note: I was able to login to the Outlook Server by disabling Norton completely when making an email account, but I still can't get past the "Add Security Exception" box so it doesn't work regardless. Id also would like to keep using Norton, just stop it from effecting Thunderbird.)

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Chosen Solution

Norton controls Firewall - please check Is Thunderbird set up as an allowed program ?

I also located this info which should help. https://community.norton.com/en/forums/auto-update-norton-360-v2449067835-now-causes-security-exception-thunderbird

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Yes, it is, but the link helps. Thankyou.

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