Request error in IE11?

Question

Angular

Everything works in all browsers, but in IE11 the application does not open
in the console with the following messages:

SEC7118: XMLHttpRequest для https:///mysite/underwriting/api/error требует Cross Origin Resource Sharing (CORS).
SEC7119: XMLHttpRequest для https:///mysite/underwriting/api/error требует предварительный запрос CORS.
SCRIPT7002: XMLHttpRequest: Сетевая ошибка 0x80070005, Отказано в доступе.

Why is that? And how can this be fixed?

Answer 1

On the backend, you need to implement CORS (Access-Control-Allow-Origin headers in the http response, sometimes others). Then it will work.