Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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Total collapse of the system

info14264

I have four different email accounts. A week ago, all incoming and outgoing traffic suddenly stopped . Webmail works normally. I have no viruses, trojans, etc. I deleted one of the accounts and tried reinstalling it. I can't do it anymore. The system keeps responding: "Unable to authenticate to the server. Username or password configuration may be incorrect." But they are all abolutely correct. I don't know what else to do. Any clue? Thanks

I have four different email accounts. A week ago, all incoming and outgoing traffic suddenly stopped . Webmail works normally. I have no viruses, trojans, etc. I deleted one of the accounts and tried reinstalling it. I can't do it anymore. The system keeps responding: "Unable to authenticate to the server. Username or password configuration may be incorrect." But they are all abolutely correct. I don't know what else to do. Any clue? Thanks

Všetky odpovede (4)

sound like the dreaded antivirus software firewall has another confused customer. What antivirus are you using, Personally I have a pet hate in Norton. It just blocks things at random when they update, but I have gone to using Windows defender because the others all just seem to make money selling fear and confusion.

Vybrané riešenie

info have you resolved your issue?

I see you have also posted at https://support.mozilla.org/en-US/questions/1588604

Yes, thank you! I removed Kaspersky and relied only on Defender. All the issues disappeared.

Fantastic. Thanks for the info!

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