Outlook not sending emails in Windows PC - With or Without attachments 

While Microsoft Outlook is an excellent email client, it comes with its own set of problems. One such issue is when the users are unable to send emails in Windows with or without attachments. Many combinations could cause the problem, but there is one check you need to make sure you are aware of the attachment size limits offered by the Email Service you are using with Outlook.
One of the common scenarios is that emails do not work in Outlook, but they work on other devices, including smartphones. It could be working on a different PC, but not on one of the PCs. These are a few ways you can be aware of isolating the problem.
1] Repair Outlook Profile
2] Turn off the “Work offline” mode
3] Increase Outlook Attachment Size
4] Check Mailbox Settings
5] Check Add-ins
6] Turn of Antivirus Email Integration
7] Zip Files before sending
8] Blocked Files
To read in detail about these points, read this article on www.thewindows...