Windows 10: Outlook Mail will not allow me to send any emails with error message

My email will not send anymore emails. I get an error response no matter the email address. What is causing this??"there was an error sending"

:)

 

Delete mails in Outlook but want to keep mails untouch in webmail

When I deleted an email in outlook and my webmail got deleted too. I want to keep all the inbox mails from the webmail even I complete deleted in outlook. I spend hrs can't think it out how. Any step by step instruction? I'm using IMAP account btw. Thanks and Merry Christmas.

 

Office 2013 Mail Merge sending no emails

I used to have no problems sending a Mail merge on Windows 7, however, trying to do one today on Windows 10, and it's simply not working.

I've done everything the same, using an excel document as the data source, and that works fine. When I select Finish & Merge -> Send Email Documents and then OK, Word makes it appear it worked (all the dynamic values change to those of the contacts as it cycles through sending each email), but that's it. Not one email is sent; nothing in my sent items and nothing shows that any of those contacts have been email on our exchange or email archive software.

I've seen that people suggest that Outlook is my default app (it is). Double checked the registry key as well Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Clients\Mail\(Default) has the value Microsoft Outlook.

I've literally done nothing different from when doing this on Windows 7; seems that the searches seem to suggest that it's a common problem as well, but everyone seems to say they had a problem and disappears from their support request (and most answer tell you to check the above registry key).

 

Outlook 365 Fails to send message 0x800ccc0F

I am using Outlook version 1812 build 11126.20196. This morning a wrote an e-mail and my system is unable to send it, I keep getting error 0x800ccc0f or 0x8004210B. Outlook keeps trying to send this e-mail over and over again. I have looked out those codes and followed the suggestions, even re-installed office and nothing helps.

I wrote the same e-mail again and it was sent out with no problem. I would like to delete this e-mail that is causing the problem, but it is NOT in the outbox. *cry I am getting tired of this send/receive error messages.

Help please,
Ak