微信开启了指纹支付突然不能用这个并不存在什么安全隐患，可能是因为一些进程或者是软件的一些小BUG，所以会导致用不了指纹支付，需要把指纹支付关闭再重新开启就可以恢复正常了。
微信开启指纹支付的方法：
1、打开微信，点击“我”；
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2、然后点击“钱包”；
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3、点击上方“省略号”；
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4、打开“支付管理”；
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5、打开“指纹支付”，再进行指纹设置即可。
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官方服务
- 官方网站
- 官方网站
1、首先打开手机上的“微信”app，在个人中心页面里，进入个人账户信息界面。
2、点击箭头处的“支付”按钮，进入微信支付界面。
3、下面点击右上角箭头处的图标，开始设置指纹支付。
4、当前指纹支付处于关闭状态，点击“指纹支付”，界面如下图所示。
5、点击箭头处按钮，开启指纹支付，下面输入支付密码验证身份。
6、最后输入密码验证完成后，开始验证已有指纹，如下图所示就完成了。
其他机型暂时不支持微信指纹支付。
