问题表象:
驱动丢失,在win7上,之前可以正常使用,突然出现链接扫描或者USB设备报错,大部分原因是杀毒软件拦截了插件的开机启动导致的,如图:
![Win7扫描弹窗插件报错无法使用](https://docs.liankenet.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
![Win7扫描弹窗插件报错无法使用](https://docs.liankenet.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
解决方法:
1.卸载之前的驱动重新安装即可,找到计算机,右击打开管理
![Win7扫描弹窗插件报错无法使用](https://docs.liankenet.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
2.选择设备管理器,进入通用串行总线控制器,并找到“VirtualHere USB Host Controller”
![Win7扫描弹窗插件报错无法使用](https://docs.liankenet.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
3.选中右击VirtualHere USB Host Contorller,选择卸载
![Win7扫描弹窗插件报错无法使用](https://docs.liankenet.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
4.取消勾选“删除此设备的驱动程序软件”,点击确认
![Win7扫描弹窗插件报错无法使用](https://docs.liankenet.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
5.卸载后请检查列表的设备是否消失。
![Win7扫描弹窗插件报错无法使用](https://docs.liankenet.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
6.驱动卸载完成后打开虚拟USB(USB_Client-xxx)软件安装驱动,链接设备时会提示安装驱动,将驱动安装到电脑上即可。
![Win7扫描弹窗插件报错无法使用](https://docs.liankenet.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
7.检测到电脑上没有虚拟USB驱动,点击确认安装
![Win7扫描弹窗插件报错无法使用](https://docs.liankenet.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
8.期间只需要根据向导选择下一步即可,如果出现杀毒软件提示,请选择允许
![Win7扫描弹窗插件报错无法使用](https://docs.liankenet.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
9.驱动装好后两项驱动正常都应该是Ready to Use,点击完成
![Win7扫描弹窗插件报错无法使用](https://docs.liankenet.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
10.到这里驱动已经安装完成,我们只需要链接设备即可正常链接后为(你正在使用此设备)
![Win7扫描弹窗插件报错无法使用](https://docs.liankenet.com/wp-content/themes/justnews/themer/assets/images/lazy.png)
这时我们的驱动就已经安装完成了,直接使用即可
![Win7扫描弹窗插件报错无法使用](https://docs.liankenet.com/wp-content/themes/justnews/themer/assets/images/lazy.png)