After I reboot one of my VirtualBox host servers today, I was unable to start the virtual box guests. The error was a popular one: NS_ERROR_FAILURE.<\/p>\n
The problem was caused by the kernel mismatch problem. All you need is to rebuild the virtual box library to match with your system kernel. In my case, I had the following:<\/p>\n
\r\n#This is my Virtual Box version\r\n6.0.16\r\n\r\n\r\n#This is my Linux kernel:\r\nuname -a\r\n3.10.0-1062.12.1.el7.x86_64\r\n\r\n\r\n#This is my virtual box modules version:\r\nmodinfo vboxdrv\r\nfilename: \/lib\/modules\/3.10.0-514.10.2.el7.x86_64\/weak-updates\/vboxdrv.ko.xz\r\nversion: 5.0.40 r115130 (0x00240000)\r\nlicense: GPL\r\ndescription: Oracle VM VirtualBox Support Driver\r\nauthor: Oracle Corporation\r\nretpoline: Y\r\nrhelversion: 7.6\r\nsrcversion: 3AFDBBC6FDA2CE8CF253D33\r\ndepends:\r\nvermagic: 3.10.0-957.1.3.el7.x86_64 SMP mod_unload modversions\r\nparm: force_async_tsc:force the asynchronous TSC mode (int)\r\n<\/pre>\n\nAs you can see, the Virtual Box kernel is loaded from a wrong kernel location. Also the Virtual Box is 5.0.40 instead of 6.0.16. In my case, all I need is to rebuild the virtual box library to make it compatible with the Linux kernel. In order to do it, you will need to do the following:<\/p>\n
\n
- Remove all the old Linux kernels<\/li>\n
- Remove the Virtual Box modules.<\/li>\n
- Uninstall the Virtual Box<\/li>\n
- Reboot<\/li>\n
- Install the Virtual Box<\/li>\n<\/ol>\n
\r\n#Remove all of the old kernels:\r\nsudo package-cleanup --oldkernels --count=1 -y; \r\n\r\n\r\n#Remove all except your current modules:\r\ncd \/lib\/modules\/\r\n\r\n\r\n#Uninstall the Virtual Box\r\nsudo yum remove VirtualBox-6.0\r\n\r\n\r\n#Reboot\r\nsudo reboot\r\n\r\n\r\n#Install the Virtual Box\r\nsudo yum install -y VirtualBox-6.0\r\n\r\n\r\n#Install the Extension Pack (The version number may be different in your case)\r\nwget --no-check-certificate https:\/\/download.virtualbox.org\/virtualbox\/6.0.16\/Oracle_VM_VirtualBox_Extension_Pack-6.0.16.vbox-extpack\r\nsudo VBoxManage extpack install --replace Oracle_VM_VirtualBox_Extension_Pack-6.0.16.vbox-extpack\r\n\r\n\r\n#Start the Virtual Box again\r\n<\/pre>\nThat’s it! Hope it helps!<\/p>\n
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