Hi, How are you? I am Alan. I will be happy to assist you today. I appreciate your contact!
Just a gentle reminder that we are only Microsoft users like you here in the community. We are not Microsoft employees and we do not have tools to access any Microsoft System.
Hanz, we apologize for the inconvenience. Microsoft's policies for supporting phone numbers for account registration and security verification may vary by country or region. Some countries may have limited or restricted support for adding phone numbers to Microsoft accounts due to regional regulations, telecommunications agreements, or other factors.
If you are having trouble adding your phone number to your Indonesian Microsoft account and receive a message that the country code is not supported, you can also try Alternative Verification Methods. Microsoft often offers alternative verification methods, such as using an email address or security questions, to help protect your account.
I hope this information helps. If you have any questions, please let me know and I'll be glad to assist you further.