Q: Unable to sign in with Apple ID after update

Hi there, Queeneaster!

Having Apple ID issues can be hard to nail down. I know it's an integral part of your whole Apple experience, so I'll do my best to help!

Having trouble signing in? -- Enter the primary email address in the text box at this site then "Continue" below that. If the email address is located, double-check the ID that's showing on your iPhone. Even a small typographical error can cause problems. If the Apple ID site doesn't recognize your email address as a valid ID, then click the "Forgot Apple ID" link and search some of your other email addresses you've used.

Sign in to the iTunes Store on your iPhone, iPad, iPod touch, Mac, PC, or Apple TV -- If you use any other devices, check the iTunes & App Store ID being used.

Contact Apple for help with Apple ID account security -- If you've determined that you're using the correct email address, you'll need to contact Account Security in your area for further support. They're only available through phone support, so use this link to find the one nearest you.

Hope this helps and thanks for joining Apple Support Communities!