Well I updated my iPhone 6 today to 10.1 and this added the Two-Factor Authentication for your Apple ID.
Well you in for a Show the first time you do this.
Items that will Fail after this up are Outlook Client on you computer.
Remove the iCloud Email address from your Outlook Client, do this through Control Panel Mail.
Next
You will have an iCloud change so be ready for it, and it is NOT an update.
If you use iCloud you should log off and then log back on (While On Your Computer) , this will force the two factor to kick in so have your iPhone next to you as you will receive your code.
Restart you computer.
Go into Programs and Features and click on iCloud and select repair. Restart as requested
When you computer comes back up iCloud setup will start up and make sure you select Outlook before you click the Next Button.
Once completed then Start Outlook Client Software,,,,You will enter your Password 4 Times and make sure you select save password.
Good Luck.
 
Computer is a Windows Based Computer Not an Apple or MAC.

Sounds like a pain. I'm fine with password or fingerprint only

EVGATech_AndrewA
Sounds like a pain. I'm fine with password or fingerprint only

It was, took a while to get my Outlook back and that is why I Posted.
The New two-factor authentication for your Apple ID is good I guess but what a Pain.

bcavnaugh

EVGATech_AndrewA
Sounds like a pain. I'm fine with password or fingerprint only

It was, took a while to get my Outlook back and that is why I Posted.
The New two-factor authentication for your Apple ID is good I guess but what a Pain.

Ehhh no thanks. I hated two step authentication when it was available on my Outlook email. 

 
I like finger print swipe only.

Now iOS 10.1.1