An anonymous reader writes: Many users have confirmed in the comment section of a popular reddit post that "Windows 7 computers are being reported as automatically starting the Windows 10 upgrade without permission." It's no secret that Microsoft wants users to upgrade to their new OS. Earlier in the year, Windows 10 was set as a 'recommended update' so when you install new security or bug patches, the new OS is selected by default as well. Terry Myerson, head of the OS group at Microsoft, warned users about the possibility of the OS automatically installing. "Depending upon your Windows Update settings, this may cause the upgrade process to automatically initiate on your device. Before the upgrade changes the OS of your device, you will be clearly prompted to choose whether or not to continue," he said. Whether or not the recent outcry is caused from users forgetting to deselect the Windows 10 upgrade in the update list or Microsoft updating Windows 7 PCs without users' permission, the good news is that you have 30 days to downgrade to the previous version of the OS.