If you downloaded and ran the Windows 10 Technical Preview exe from the Microsoft site without realising that it wasn't the ISO, you may have been prompted to upgrade your existing version of Windows to Windows 10 via Windows Update.
To prevent this from happening, you'll need to uninstall once the more recent updates (KB2990214). To do this, open Windows Update and click "view update history", then click "installed updates". From here you can search for and remove "KB2990214".
Once that is removed, you should no longer be prompted to upgrade to the technical preview
.
To prevent this from happening, you'll need to uninstall once the more recent updates (KB2990214). To do this, open Windows Update and click "view update history", then click "installed updates". From here you can search for and remove "KB2990214".
Once that is removed, you should no longer be prompted to upgrade to the technical preview