A common cause of frustration when setting up new email accounts on Windows Mail is the failure of the automated process.
For that reason we normally recommend using the 'Advanced' method of account setup.
Open Windows Mail, and click on the Settings icon on the bottom left panel:
Select 'Manage Accounts' upper right
Click +Add Account upper right
Click Advanced Setup
Complete account details as shown below
Email address - obvious!
User name - full email address, including domain
Password - your email account password
Account name - the account name as you want it to appear in Windows Mail
Send your messages using this name - the name you want people to see as the sender
Incoming mail server: e.g. imappro.zoho.com:993
Account type - IMAP4
Outgoing mail server - smtp.zoho.com:465
Leave remaining four boxes ticked.
Important: adding the :993 and :465 suffixes to the server names tells the server to use the secure SSL ports (in Outlook and some other mail applications they have separate settings, in which case they can be omitted)
Click Sign In and you should be good to go!