To troubleshoot the recurring 0x800CCC0F error with incoming emails in Windows Mail after switching to Frontier ISP, you can follow these steps to potentially resolve the issue: 1. Check Email Server Settings: - Ensure that the incoming mail server settings (POP3/IMAP and SMTP) match the settings provided by Frontier. Double-check the server addresses, port numbers, encryption method, and authentication settings. 2. Anti-Virus and Firewall: - Temporarily disable antivirus software or add exceptions for Windows Mail to rule out interference from security programs. - Check firewall settings to ensure that Windows Mail is allowed to access the internet. 3. Check Internet Connection: - Verify that your internet connection...