

Remove the folders C:/Program Files/Oracle/VirtualBox and %userprofile%\.VirtualBox Uninstall using the VirtualBox uninstaller from Control Panel (for some reason I didn't have one on my machine). Kill google drive, dropbox, and other system-invasive tools (and do this again if you restart during the procedure). Then unplug network cable, turn off wifi.

The installer of newer version hanged near the end, so I needed to properly uninstall 5.1.22 first to get it work:ĭownload psexec.exe and CCleaner.

My situation: I wanted to update from VirtualBox 5.1.22 to 5.1.28. (That said, I've applied this procedure twice to my main Windows 7 machine, and the operating system is still running fine.) Please backup your data or/and take a system image first. Disclaimer: this procedure is dangerous and can break your host system.
