"Unknown error" at the startup

[manomi]

Every time I start my computer, I encounter "Unkown error" as you see in the attached file.
This error can be avoided if I refresh IMAP folder in the account setting and I manually check mails. However, after this operation, the "Unkown error" continues to be reported at the moment of periodical mail check.
This error has come to me for several weeks. During this period, I have not changed computer nor its configuration in terms of e-mail.
I don't remember exactly and don't see any relationship, but the server, operated by Microsoft 365, began using a quarantine system, approximately at the same time when MailWasherPRO began reporting this error.
Could you please show me how to let MailWasherPRO function correctly ?
Thank you very much in advance.

[gingbat]

Yes, usually socket errors mean that your firewall, antivirus programs email scanner or other security software has blocked MWPro from checking mail there?
Please check the settings in there to ensure MW is allowed full internet access, and has no rules either blocking it, or incorrectly setup which could cause issues.

If no, or no better, is there an Antivirus email scanner active on your PC there? (Within your antivirus or firewall software), maybe try disabling this and see if that helps?

(NOTE: the antivirus real time scanner will still scan any emails and attachments for viruses anyway, so you are quite safe)