Wouldn't you know it, I started to have trouble with getting the Outlook account (live.com is the same as Outlook.com) on my laptop and desktop too. I was missing emails. Whenever I set it up, it automatically went to the Hotmail Connection Manager. So, I did the same thing on the Windows computers that I did on the LG V10, did it manually, and now they are fine too. Microsoft must have changed something. I used the IMAP server. Here are the setup instructions summarized:
OUTLOOK.COM POP3 SERVERS
Incoming mail server pop3.live.com
Incoming mail server port 995 (SSL required)
Outgoing (SMTP) mail server smtp.live.com
Outgoing (SMTP) mail server port 587 (SSL/TLS required)
Outgoing server (SMTP) authentication yes, same settings as my incoming mail server
OUTLOOK.COM IMAP SERVERS
Incoming mail server imap-mail.outlook.com
Incoming mail server port 993 (SSL required)
Outgoing (SMTP) mail server smtp-mail.outlook.com
Outgoing (SMTP) mail server port 587 (SSL/TLS required) I used TLS, as per LG
Outgoing server (SMTP) authentication yes, same settings as my incoming mail server