Some users may encounter the following issue when launching NoxPlayer. Please follow the instruction here to fix this problem.
![](http://bignoxhk-player.oss-cn-hongkong.aliyuncs.com/help-center/2022/10/14/c88607cbb79647a3b5214bf7ef5bc5b7.png)
1. Open Windows Security
![](http://bignoxhk-player.oss-cn-hongkong.aliyuncs.com/help-center/2022/10/14/7963521e408e43feb786c466543b197e.jpg)
2. Click/tap on Device security on the left side, and click/tap on the Core isolation details link on the right side. (see screenshot below)
![](http://bignoxhk-player.oss-cn-hongkong.aliyuncs.com/help-center/2022/10/14/34e557083cd840a9b043319bdb7b0264.png)
3. Turn off Memory integrity. (see screenshot below)
![](http://bignoxhk-player.oss-cn-hongkong.aliyuncs.com/help-center/2022/10/14/dc08aeb1dabe4a6fa7fb8fff817b064f.png)
4. Restart the computer to apply. (see screenshots below)
![](http://bignoxhk-player.oss-cn-hongkong.aliyuncs.com/help-center/2022/10/14/de20c396e4e749439f29bbc3225c9cd4.png)