
Owadays, MS Outlook is widely used and is considered the most trusted email client.

These days tools like Microsoft Security Essentials or Windows Defender come pre-installed with Windows 7 and 10. Hence you can try disabling your antivirus or completely uninstalling it temporarily to isolate the cause of this error. There is a possibility that antivirus programs interfere with Windows Live Mail. Manual Methods to Fix Windows Live Mail Error Code 0x800CCC90 Fix #1 Turnoff Your Anti-Virus Temporarily

Several users have reported that this error might be triggered by the interference of antivirus software or other third-party software. In this case, all of your unsent emails are sent to Outbox. Due to this server error code 0x800CCC90, the user is unable to send or receive messages. These days a different error/bug is causing trouble for some Windows Live Mail users. One such problem was that the deleted emails kept returning day after day. Since 2013, many problems had been reported with Windows Live Mail 2012. It was a successor to Windows Mail (Windows Vista), the successor to Outlook Express (Windows XP and Win98). Windows Live Mail (WLM) is a freeware email client (but now discontinued by Microsoft). This is quite frustrating as not only me but my friends too have the same problem. I also tried repairing all Windows Live Programs, but this didn’t solve my problem. I found a way around this error by going to my ISP’s homepage from where I can access all my mails. Now, each account is asking for a password.

Mail is imported into my Live mail account, but unable to do so for the other accounts. “ “Windows Live Mail is continually showing me Server Error: 0x800CCC90.
