She must have been locked up in a dark room. Commonly known as being on the blacklist.

I have been researching this for a long time. After reading various complaints from American consumers, I finally found the technical department of Microsoft and got the truth. Because I suffer from it too. During Thanksgiving, I accidentally filled in a Chinese address (the browser automatically filled in the form), and my account was blocked. Even if you use a US credit card and the information is correct, it still won't work if you use the same account number.

One of the reasons is that the billing address of the credit card does not match the registered address of the card. If you use a domestic credit card, the billing address (billing address) cannot be filled in English. If you fill it in Chinese, it will be identified as credit card theft fraud. If you fill in translated English, it may not match the card's identification database.

Another reason is placing orders multiple times. For example, on Black Friday, his website was extremely slow, and order submission was stuck. If you submit a few more times, this mechanism will be triggered, and it will be considered that you may attack the server or maliciously buy and sell at special prices, and you will be blacklisted. Many people have the same reason.

I tried changing my account and using a credit card that I had never used in the Microsoft store, and the payment was successful. But I added the previously blacklisted credit card to this account, and the account was immediately blocked.

I talked with customer service for more than 3 hours. I tried deleting cookies and contacting the bank, but it didn’t work at all. Because it’s not a problem with your card limit, it’s not a problem with your bank, and it’s not a problem with cookies. It’s because you have been blacklisted. The customer service staff are not highly educated and do not understand the backend operations. I have already given them countless bad reviews. They don't have the authority to blacklist you. Don't contact customer service anymore, it's a disservice.

The solution for you is not to use domestic credit cards, re-apply for an account, use a new American credit card, or ask an American friend to buy it.