Had this error and read the multiple threads on solution for hotmail account. Delete account, wait a while and reinstall the HM account.
I did this and I no longer have the error message. BUT, window live mail will no longer sync with the hotmail account. I have several email accounts, comcast, gmail and hotmail. They all work fine except Hotmail. Again, the error message is gone, is says it's checking, but I have had no new HM messages since september 9.
I am using the W10 built in mail to check HM, but I really don't like the layout.
Unable to send or receive messages for the Outlook (“email name”) account.
Server Error: 0x801941F7
Server: ‘https://m.hotmail.com/Microsoft-Server-ActiveSync’
Windows Live Mail Error ID: 0x801941F7
Get this message when trying to receive/send emails. Only have the one (1) Outlook account when I set this computer up using Windows Live Mail. Was working fine, until after doing some required Windows Live Mail update since going to Windows 10 (directly from Windows 8.1).