Microsoft’s Windows 10 upgrade “nag” campaign — an effort to convince customers running Windows 7 and Windows 8.1 to upgrade to the new operating system — began today, with users reporting that they’d seen the ad-like screens.

Computerworld confirmed on several Windows 7 PCs that Microsoft had triggered the notification.

The campaign is contained within an application dubbed “Get Windows 10,” which includes several screens that trumpet the free upgrade to consumers and small businesses — and let users “reserve” a copy.

Earlier today, Microsoft announced that the Windows 10 upgrade would be available starting July 29, just eight weeks away.

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