Here's the technical details: Win 10 Home 22H2 Build 19045.4291, Mozilla TB Thunderbird Version 78.4.0 Build ID 20201019003438 Distribution ID Update Folder C:\ProgramData\Mozilla\updates\8216C80C92C4E828 This AM I was able to check / get e-mail five (5) or more times. Then clicking 'Get Mail' displays; ''connecting to mail.duo-county.com'' After 15-20 seconds connection to server mail.duo-county.com; ''Timed Out'' I know of NO changes to any setting. When our e-mail was set up, we were told to set we were told to use Pop-3. Our ISP, who does NOT use NOR 'know' TB said we should be using IMAP, could NOT help review nor doing anything without risking ALL folders - files-data! PLEASE help ASAP. Since we can't get - check mail I'm LOST! ''' My spouse's e-mail is wpj@duo-county.com'''