Thanks for reaching out QuantumHopper91,
It sounds like you're using a security key to access your device, but it is only working in Chrome on your Windows PC and not with your iPhone XS. We can help.
One possible reason you might run into this behavior is if you are using a child account , or an otherwise managed account with your device - such as when using an iPhone that is managed by your work or school. Can you confirm if any profiles are currently set up that could be interfering with this functionality?
A great resource we can keep handy is this guide About Security Keys for Apple ID. It also recommends that we make sure you're using a compatible key with your iPhone and other Apple devices:
Choose the right security keys
Security Keys for Apple ID works with any FIDO® Certified security key. Some good examples include:
* YubiKey 5C NFC (works with most Mac and iPhone models)
* YubiKey 5Ci (works with most Mac and iPhone models)
* FEITIAN ePass K9 NFC USB-A (works with older Mac models and most iPhone models)
If you choose a different security key, you should choose security keys that are FIDO® Certified, and have a connector that works with the Apple devices that you use on a regular basis.
For a complete list of certified keys from the FIDO Alliance, visit the FIDO® Certified Showcase.
Let's make sure your device is listed on the compatible list, and once we've confirmed that and that you're not using a managed device we can investigate further.
Hope that helps.
Keep us posted.