内容简介：一直使用如果执行可看到错误信息：
一直使用 VirtualBox 安装的 Debian 环境编译 WD MyCloud 的代码。但是最近 VirtualBox 升级后，升级增强功能，然后共享粘贴板就不能使用了。
如果执行
$ VBoxClient --clipboard
可看到错误信息：
VBoxClient: Failed to connect to the VirtualBox kernel service, rc=VERR_FILE_NOT_FOUND
如下图：
重新执行安装，才注意到如下错误信息：
longsky@debian:/media/cdrom0$ sudo bash VBoxLinuxAdditions.run [sudo] password for longsky: Verifying archive integrity... All good. Uncompressing VirtualBox 5.2.20 Guest Additions for Linux........ VirtualBox Guest Additions installer Removing installed version 5.2.20 of VirtualBox Guest Additions... Copying additional installer modules ... Installing additional modules ... VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel modules. This may take a while. This system is currently not set up to build kernel modules. Please install the Linux kernel "header" files matching the current kernel for adding new hardware support to the system. The distribution packages containing the headers are probably: linux-headers-amd64 linux-headers-3.16.0-7-amd64 update-initramfs: Generating /boot/initrd.img-3.16.0-7-amd64 VirtualBox Guest Additions: Starting. VirtualBox Guest Additions: Building the VirtualBox Guest Additions kernel modules. This may take a while. This system is currently not set up to build kernel modules. Please install the Linux kernel "header" files matching the current kernel for adding new hardware support to the system. The distribution packages containing the headers are probably: linux-headers-amd64 linux-headers-3.16.0-7-amd64 update-initramfs: Generating /boot/initrd.img-3.16.0-7-amd64
原来是缺少了编译依赖的内核头文件，导致升级失败，而且以前版本已经安装好的版本却已经被删除了。
这部分头文件以前是存在的，但是随着系统内核的升级更新，头文件却没有自动被更新，导致这个问题。
执行如下命令安装缺少的软件包：
$ sudo apt-get install linux-headers-amd64
参考链接
Bidirectional Drag and Drop/Shared Clipboard is not working with VirtualBox Kali Linux
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