Troubleshoot this problem by the methods below:

1. Log out of WeChat and log in again.

2. Log in on phone and website/WeChat for Windows/iPad at the same time is supported. If you've logged in on another device, you must log out of it. After logging out, attempt to log in to the current device again.

3. Power off your phone for 5 to 10 minutes to clear cache and restart it.

4. Close security apps running on your phone.

5. Update to the latest version of WeChat.

If you're repeatedly prompted of this message, you can perform the following actions after logging in to WeChat:

1. Link your mobile.

2. Change password of WeChat, linked QQ or E-mail.