Thank you for sharing this!
Wasted more time on this foolishness than I want to admit... :Angry:
I have a brand new out of the box Dell G7 laptop. I installed my office software and configured outlook exactly like my old laptop with respects to the account and server setting. I was able to receive email with no issues; however, any email I tried to send would just sit in my outbox.
One message post i read indicated that the Killer Control Center may be the issue; however, on my laptop that interface is only for the physical Ethernet connection vs the wifi interface. Since my Ethernet was disconnected, nothing appeared in the KCC when I opened the application. Because of that, I decided to plug my laptop into my home router to see if the KCC program would populate and that is when i saw the emails sitting in my outbox go out.
Seeing this happened helped me narrow down my search which is what allowed me to find this page. I stopped and disabed SmartBytes and I can now send email again when I am using wifi.
Thank you for passing on the fix for this.
Thank goodness for this post. My outlook 2016 desktop app (as part of MS office that I bought with my 3 month old dell inspiron notebook) suddenly quit sending emails, error code as you indicated in the post. I could receive but not send (all accounts). Up to today, no problem. I performed all of the steps Microsoft has online for this error, but no luck. I finally called Microsoft support, ending up having to pay $29 for them to work on it (just out of warranty period). 3 hours later, no luck finding the problem. They escalated it to their level 2 support with a scheduled time next week to work on it.
After MS was done today, I found this post. I uninstalled smartbyte in settings-apps and now my outlook desktop app works again. Clearly, removing smartbyte fixed the problem. No idea why it appeared suddenly.
Thank you so much for this very useful post! My six week old laptop suddenly stopped sending emails today. After trying several things, I stumbled on your post. I really appreciate you sharing this information and saving me hours of work.
We know of an issue with older drivers for Intel wireless devices that may be causing the issue that you are experiencing. You can either update the drivers, along with the Killer Control Center here - https://support.killernetworking.com/download/killer-control-center/ or you can update your Intel Wi-Fi drivers from Dell here - https://www.dell.com/support/home/us/en/19/drivers/driversdetails?driverid=vg6m5. There is no 22.214.171.124 version of the Killer Network Service, but that is a very common, older Intel Wi-Fi driver version.
If that doesn't resolve the issue for you, we encourage you to contact us directly here - http://support.killernetworking.com/submit-a-ticket/ - so that we can help you further!
-- Anthony with Killer Networking and SmartByte Support
Thank you, thank you, thank you!!! I've got a new Alienware 17 R5 running Windows 10 Pro. I have scoured the internet and YouTube since receiving my new computer in January and finally you have provided me with a solution. I stopped my "Killer Network Service" and BAM! instantly sent mail from Outlook 2019. Fantastic! Thank you again!
I had the same problem as kk_1 and have spent days searching and trying out solutions that haven't fixed the send email error 0x800ccc0f in Outlook 365.
Dilbertdad you are a STAR!!!!
I am running a Dell G3 3779 x46 and it has installed SmartByte Drivers & Services 2.0.643 and when I stop the service emails are sent without problem but as soon as I start the service the error occurs. This I think is the latest version looking at the link you have posted so looks like an uninstall for me as well. As others have said, this is SHOCKING, the amount of time that has been spent resolving this issue has cost me dearly! Not impressed by Smartbyte