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  1. Marcos, I have already sent a log collection to Peter Randziak. Do you require another one?
  2. I use STARTTLS for the server I am having trouble with, and SSL/TLS for all other (functioning) servers.
  3. itman, I have the Home version of Win 10 version 2004 (OS Build 19041.572), and I still have problems (albeit currently handled by using excluding IP address list).
  4. For the record, I managed to solve my Thunderbird SSL/TLS problems by keeping protocol filtering enabled, but adding the IP address of the IMAP server (a local address on my home network) to the Excluded IP addresses list, found in Advanced setup > Web and email > Protocol filtering > Excluded IP addresses. Maybe not the correct or best way to solve it, for for now, I'm good. I presume my firefox errors were a result of certificate regeneration, which I handled by following the advice above. Regards, Joakim
  5. Marcos: I tried pre-release update channel, but no change; I stlll cannot connect to my local IMAP server if email protocol filtering is enabled.
  6. Marco5342: these error messages are similar to the ones I get when protocol filtering is enabled. itman, as I mentioned, I have no problem accessing major email providers like gmail and outlook, but the problem is with my local IMAP server. It might be that NOD32 after the update finds the local self-generated certificate problematic, although it is sufficient for my needs. I found a Certificate Validity setting under Web and Email SSL/TLS settings in NOD32, but the only two options, "block" och "ask", did not make much difference either way. To be honest, I believe that certificate validity should be handled by the application, not the antivirus software. Is there any way to disable this check for local domains? When it comes to firefox, these errors now seem to have disappeared, for unknown reasons. Great, as long as it stay that way.
  7. Thanks for your reply! The root certificate is fine. However, I have done some more checking, and it appears that the firefox problems are intermittent; for now it seems to work even if SSL/TLS protocol filtering is enabled. Then I found a setting affecting only protocol filtering for email client, and I can confirm that thunderbird problems are reproducible. Any ideas?
  8. Yesterday, I got an automatic update for my ESET NOD32 to version on my Win10 computer. After restart, I was no longer able to access some of my email accounts using thunderbird. My gmail and outlook accounts worked, but my main account, a local IMAP server, hanged with the message "Checking mail server capabilities..." At the same time, my firefox browser started to fail on a number of sites (not all, mind you) with the error "Secure Connection Failed: Peer’s certificate has an invalid signature. Error code: SEC_ERROR_BAD_SIGNATURE, The page you are trying to view cannot be shown because the authenticity of the received data could not be verified." All of this worked perfectly before I updated NOD32 so I started to investigate the AV settings, and soon discovered that if I disabled SSL/TLS protocol filtering, all worked perfectly. So something has happened when applying the update. Today, I found a new NOD32 update,, which I hoped should solve the problem, but it did not. Likewise, I updated both firefox and thunderbird to latest releases, but the problem is still there. I tried to find some useful changelog but could not find any other than a very high-level description which did not help me. So I wonder, given that I did not have these problems until I did the update yesterday, what has happened in NOD32 that broke my browsing and email reading? For obvious reasons, I don't want to have protocol filtering disabled permanently. Regards, Joakim
  9. Well well, there you go. 🙂 Anyways, thanks for the support, and great that you found a solution! Regards, Joakim
  10. Hello again, for the record, as of last week, the update process started to work again without network failure. I do not know the reason for this; I have not during this week modified or updated my computer in any way, apart from NOD32 signature updates and MS Defender. I don't know if ESET or Microsoft changed anything, but I am happy. :-) Regards, Joakim
  11. I'm sorry, but I as I mentioned earlier, I won't go through the hazzle of uninstalling and reinstalling on this old Win7 computer; it might as well make things worse.
  12. I checked my Tilgin router, provided by my ISP, and I could not find any intrusion detection settings in it. (Although, I consider the setup of that router to be rather complex and somewhat hard to get a grip on, so I might have missed it,)
  13. Sorry, I believe I haven't been completely clear in my problem description. The download of the update works fine, and it seems to install correctly as well, but it is (more or less immediately) after the update has been installed that the network connection goes down. I use ping towards another node in my network, and I get "Request timed out" and "Destination host unreachable", until the connection is restored again after three minutes. Please note that this Eset update operation has worked without any problems for many years, up until around two weeks ago. I checked if I had installed any software at that time, but I had not. Could you please give directions on how I go about opening a support request?
  14. itman, I connected my computer using Ethernet cable before doing an update, and this time the network remained up. I should test it one more update before I can say it works, but it looks like it does. What does that tell us? Btw, as I mentioned, I am running Windows 7, not 10. EDIT: And I now just did a second update with Ethernet cable, and there was no network failure. I also noticed that the little icon in the system tray did spin for almost exactly three minutes after updating, similar to the time that the wifi is down. Is that a lead?
  15. Marcos, I do have the Cleaner module 1211.1 installed. And I'm sorry, but to uninstall EAV, install a demo version of ESET Internet Security, then uninstall that before it expires and finally potentially reinstall EAV, is way too much of a hazzle for me to do on this old computer, which I am soon to replace anyway. I am just worried that this problem will show up also on my new computer, should I choose to install EAV on that one as well. I have used EAV for many years and I have never experienced any problems with it, until now. However, if no solution can be found for my current computer, I'll just have to live with it. I did find the alert letting me decide whether to install updates or not, so at least I can postpone my three minutes of wifi blackout to a suitable point in time. @itman, I am not using a VPN connection, thanks for asking.
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