win10无线显示器安装失败 (投影到此电脑)是灰色 怎么搞?
有2个网友回答
用户打开win10的应用功能，在可选功能中需要添加无线显示器，把无线显示器安装上就可以了。
Windows 10，是由微软公司（Microsoft）开发的操作系统，应用于计算机和平板电脑等设备。
Windows 10在易用性和安全性方面有了极大的提升，除了针对云服务、智能移动设备、自然人机交互等新技术进行融合外，还对固态硬盘、生物识别、高分辨率屏幕等硬件进行了优化完善与支持。
使用说明
些可用空间较小或硬盘空间较小的设备，如存储空间为 32 GB 的电脑，在升级后可用空间可能已所剩无几。可以在“存储”系统设置中轻松删除临时文件等文件或者先前的 Windows 版本以释放磁盘空间。
Windows 先前版本的文件让可以恢复先前的 Windows 版本。这些文件在升级 10 天后将自动删除。为了释放空间，也可以立即删除这些文件。
需要连接到 Internet 来执行升级。Windows10 是一个大型文件（大小约 3 GB），可能会产生互联网接入 （ISP）费用。
WIN10下可选功能无线投屏安装失败解决办法
我希望通过手机投屏到电脑，但需要电脑能安装可选功能无线投屏，但安装时失败，但未提示为何失败，在网络上找各种处理方法。
一、 确定本电脑是否支持无线投屏功能：
1、dxdiag检测，另存文件，查找MIRACAST:
System: Miracast: Available, with HDCP(系统支持）
Display Devices： Miracast: Supported (显示器支持）
2、运行netsh wlan show drivers：
支持的无线显示器: 是 (图形驱动程序: 是，WLAN 驱动程序: 是)（无线支持）
以上信息说明本电脑是支持的
二、 下载工具软件DISM++，通过DISM++进行安装
1、在可选功能中显示所有功能，安装无线投屏，安装，提示错误0X800F0954；
2、在网上查了一下，这种错误应该是.NET framework3.5安装不成功造成的；
3、通过DISM++进行安装.NET framework3.5失败，网上搜
4、运行REGEDIT,找到以下位置的键值：
\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU：USEwuserVER中值改为0，并重启WINDOWSUPDATE服务，再安装.NET3.5（注意，需要安装源,即安WIN10安装光盘，如G:\SOURCES\SES<根据光盘或源盘位置更改>），安装成功，再将USEWUSERVER值改为1，重启服务
5、再安装无线投屏可选功能，OK
三、其它可选功能安装失败估计也是.NETFramework3.5未安装成功造成的。
以上是我电脑出现无线投屏安装失败解决办法，供参考！
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