Windows 10 Technical Preview build 10049 has been available for quite some time now. For those of you who have been patiently waiting to install the build to no avail, or have experienced longer than usual install times, here is a solution that might help.
There are two common issues with installing Windows 10 build 10049. First, attempts to install the build may be blocked due to insufficient disk space. Second, the amount of time needed to install the latest build is taking way too long — sometimes it takes hours to install.
The solution? Free up some disk space. You can use disk cleanup or uninstall a large game that is taking up valuable space. You can also uninstall language packs from Windows by typing the following command in command prompt as an administrator: Lpksetup /u
Give it a shot if you are having issues installing Windows 10 build 10049 or keep these tips in mind for the next build.