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- Step 1:The Yahoo IMAP Error Code 800ccc0f is common and occurs on all email platforms.
- Step 2:The error 800xxx0f means- Cannot locate server/ connection lost.
- Step 3:The first step is to check for the Yahoo! Services troubleshooting wizard.
- Step 4:Make sure to check the settings and disable antivirus or firewall software.
- Step 5:Try troubleshooting to connect to check if the error is fixed or not.
- Step 6:Restart your computer and restart Yahoo! in safe mode.
- Step 7:The Maximum Transmission Unit (MTU) can also be the reason in resulting in the Yahoo IMAP Error Code 800ccc0f.
- Step 8:If troubleshooting does not fix the error, check for the Yahoo! Services IMAP and the SMTP settings.
- Step 9:Make the necessary changes to the port numbers for both the incoming and outgoing servers.
- IMAP Yahoo Mail server: imap.mail.yahoo.com.
- IMAP TLS/SSL: Yes.
- IMAP user name: your yahoo email address.
- IMAP password: password for the yahoo mail account.
- Change the IMAP Port Number from 993 to 143.
- SMTP Yahoo Mail server: smtp.mail.yahoo.com.
- SMTP TLS/SSL: Yes.
- SMTP username: yahoo email address.
- SMTP password: your yahoo mail password.
- Change the SMTP port number from 587 to 465.
- Step 10:You can try changing the IMAP port number to fix the Yahoo IMAP error code 800ccc0f.
