Windows 10: Outlook Cannot Send Mail

I did the windows 10 upgrade yesterday and since then my Outlook 2010 cannot send mail. It receives mail as it should without any issues. I have multiple emails accounts with different vendors and it is doing the same on all of them so I have ruled out it being a hosting issue.

I have also disabled all my internet security and firewall but that did not help at all?

:)

 

email

The windows ten mail envelope for email stops working and is not synced with outlook dot com to rec. I cannot send any emails from outlook mail but I can send from gmail. I have to use gmail to send because both programs will not send from windows 10 or
outlook dot com

 

Send to Win 10 Mail App

I like the mail app so much I stop using Outlook altogether. However, I cannot seem to be able to right-click on a file / send to mail recipient and use the mail app to send the file. It always sends me to Outlook. I have changed ALL THE OPTIONS I needed
to change and yes, the default mail app is the correct one and not Outlook. Please help.

 

Yep, same thing happened to me on 2 computers. You would think Microsoft would have at least it's own programs sorted for the launch. Anyway, here is the fix:
1. Open a command prompt from the start menu as Administrator.
2. type sfc /scannow
3. Windows will scan your system files and repair corrupted ones (why they are corrupted who knows).
4. Do a reboot and I am sure your emails will work again.

 

Thanks now I need to wait till tonight when I get home to try it, thanks for the information

 

Note that you may need to run sfc /scannow more than once, do it until it reports no errors.

 

Thanks I had to run it twice and now it is all working

 

Worked like a dream and thanks for posting. Fixed the SMTP issue with message saying it could not detect a network so constant send errors. Outlook 2013. Only needed to run it once and one restart as advised. Thanks again.

 

Thanks this worked for me with just one run through! *Smile

 

Thank you so much, worked perfectly. It's been driving me mad all week *Smile

 

thank you!!

 

this really helped, it has solved mine. thanks and thumbs up.
Keep the great work burning, thumbs up.

 

I have tried the above twice and still unable to send from Outlook 13 (Office 365)(Win 10). I have deleted 2 read receipts which were stuck in the outbox. Still cannot send.
I have several Gmail accounts running fine from same Outlook.
The error message says
"Sending reported error 0x800CCC0FServer responded: 550 isn't on our network to be able to send mail"
Have checked this error code with MS and it comes up with information from 2003! XP!
Have run the scan twice and rebooted. No Faults found.
Any help gratefully received.

 

I have tried the above twice and still unable to send from Outlook 13 (Office 365)(Win 10). I have deleted 2 read receipts which were stuck in the outbox. Still cannot send.
I have several Gmail accounts running fine from same Outlook.
The error message says
"Sending reported error 0x800CCC0FServer responded: 550 isn't on our network to be able to send mail"
Have checked this error code with MS and it comes up with information from 2003! XP!
Have run the scan twice and rebooted. No Faults found.
Any help gratefully received.

 

I have suddenly had problems sending messages from Outlook 2003 on my Windows 10 PC. It might be coincidence but, having tried everything else, I decided to try compacting all my mail folders (like the old compact and repair option in Access). Select File > Data File Management. Select a mail folder and click the Settings button. Then click Compact Now. Having compacted them all I can now send emails again.