In order to solve the problem, I suggest you upgrade the application to the latest version. You can download and install it from the official web page. If this doesn't help, temporarily disable your antivirus program and see if you can use the application. If it works, go to your security software settings and set your antivirus to allow QQ International to communicate through firewall. If you still have issues, you can use the qqimail@tencent.com e-mail address to get in touch wint Tencent Technical Support.
