Configured CORS request not working Version 11.0.9600.18349

Hello everyone,

OS : Windows 7
Browser Version : IE 11.0.9600.18349
Update Version : KB3160005
When calling a configured CORS Ajax POST request (allowed from Server) I get the following Error SCRIPT7002 :

[i] SEC7118: XMLHttpRequest pour https://10.42.0.61:9002/login/checkEmail nécessite une spécification CORS (Cross Origin Resource Sharing).

[x] SCRIPT7002: XMLHttpRequest: Erreur réseau 0x2ee4, Impossible d'effectuer l'opération à cause de l'erreur suivante 00002ee4.

Although, this works fine in Version 11.0.9600.18163 :

[i] SEC7118: XMLHttpRequest pour https://10.42.0.61:9002/login/checkEmail nécessite une spécification CORS (Cross Origin Resource Sharing).

Are there any security updates done in the patch ? And why it was working in the version (11.0.9600.18163) and still working in other browsers ?

Thanks,

Best regards.