Why is Outlook not receiving emails?

Outlook is one of the most popular email servers by Microsoft. But there are times when users suffer from unwanted issues. Some common issues include outlook not receiving emails, and several factors can cause this error. Some of the major reasons which lead to such problems are the problem with the network connection, system components blocking the mails from coming, mails could be stored in the spam folder, email accounts might not being properly synced, wrong account credentials, the server might be down, or malware might have corrupted Outlook data.