Using classic Outlook for Windows in business environments
Hello Sarah P,
Thank you for contacting the Microsoft community. I'd like to let you know this is a peer-to-peer support forum meaning I'm just fellow regular MS forum users like you who are trying to help other MS forum users with their issues. I'm a Non-Microsoft Staff I don't have access to your account, nor I'm authorized to do so.
The 0x800CCC6F error in Microsoft Outlook typically occurs when there’s an issue with sending emails
Confirm the SMTP Settings: Open Outlook. Go to the Tools menu and select Email Accounts. Choose the account listed in the error message and click Change. In the email account settings window, select More Settings. On the Advanced tab, for your Outgoing mail (SMTP), uncheck the This server requires a secure connection (SSL) option. Click OK and then Close
This might also help: https://support.microsoft.com/en-us/topic/error-occurs-when-you-send-or-receive-an-email-message-in-outlook-or-outlook-express-a46ddb77-640f-3e6a-8f35-6fe3ea93e923
Regards Ruth