If you using a Windows PC and an iPhone, you might want to merge the calendar and Mail with iCloud instead of registering a new Microsoft account. The services in Apple become compatible with Windows 10 recently. It is very easy to set it up and easy to use.
Click the Start button or search Settings in Cotana
Go to Setting and Click Accounts
Click Add an account
Enter your iCloud email and password. Note: The password is not regular password of Your Apple ID. You need to generate a new password through two-factor authentication in Apple ID website. How to do that?
- Go to Appleid.apple.com, and Sign in with your regular email and password
- Verify your identity with two factor authentication
- Click ‘Generate Passwords’
- You are all set to use the new password to Log in Windows 10 Account Service