Ondrej Holzman Two-factor authentication is a very useful security feature that makes it much more likely that an unauthorized person won't log into your account, even if they get your password. Higher security can also be activated on iCloud, but sometimes this function can become somewhat impractical.
You will encounter the inconvenience associated with two-factor authentication on iCloud especially when you want to log in with your account in some third-party application, such as e-mail clients (Spark, Airmail) or calendars (Fantastical, Calendars 5 and others). It will no longer be enough to enter a name and password. Due to higher security, it is necessary to use a specific password in each application, which you must always generate.
To generate a password you must at appleid.apple.com log in to your iCloud account and in the section Security > Passwords for specific applications Click on Generate password… After entering the name of the label1 a unique password will be generated for you, which must be entered in the given application instead of your normal iCloud account password.
If you have two-factor authentication enabled on iCloud, you need to keep this in mind, otherwise you won't be able to sign in to third-party apps through your iCloud account. Unfortunately, Apple doesn't offer another way to generate specific passwords, so you always have to visit the Apple ID management web interface.
Another issue you may encounter with your iCloud account in third-party apps is when your Apple ID does not have an "icloud.com" ending. You may encounter this when you need to sign in to an iCloud mail app, but your Apple ID ends with "@gmail.com" and so it prompts you to sign in to Gmail instead (for example the Unroll.me service).
Even though you have a different Apple ID, you should always have another address ending in "icloud.com" available to find again at appleid.apple.com in the section Account > To reach at. There should no longer be any problem with it in logging in via the iCloud account.
- It's a good idea to name the label after the application where you enter the password, because at one time you can have up to 25 passwords active for specific applications, and if you want to disable some, you will know which applications belong to which password. Password management for specific applications can be found in the section Security > Edit > App-Specific Passwords > View History. ↩
Is there any way to officially change my Apple ID to iCloud.com instead of gmail.com?
Here you will find instructions: https://support.apple.com/cs-cz/HT202667
I know how to change my main AppleID email, but I can't change it to @icloud.com. Which is also written in the instructions that it might not work. I was wondering if it could be changed if I called their support line or something.