I upgraded to Windows 10 and now my Outlook 2010 won't send email.
Follow these instructions and check to see if the problem resolves itself. Good idea to reboot the machine after completing the SFC /Scannow process
Outlook Send/Receive error: 0x800CCC13 after upgrading to Windows 10
https://support.office.com/en-us/article/Outlook-Send-Receive-error-0x800CCC13-after-upgrading-to-Windows-10-e8c575fa-3ac6-4d8d-89c8-dcb1bbb33085
Hello,
The same thread has been discussed earlier. To know how to fix this error, click here: https://social.technet.microsoft.com/Forums/en-US/f399a6e5-edba-4402-868d-b0a14cf8a44f/outlook-email?forum=outlook
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Let me know if you need further assistance!!!
Best Regards
Clark Kent