Windows 10 has been available for a little over 24 hours, and so far the launch appears to be going well.

Already, there are 14 million computers around the world running the new software, according to a post Thursday on Microsoft’s Blogging Windows blog. Microsoft says that, it is “carefully rolling out Windows 10 in phases, delivering Windows 10 first to our Windows Insiders.” That means that while millions have already received the upgrade, there are millions more that are still waiting to receive their upgrades.

If you have requested an upgrade, but haven’t yet received it, Microsoft says, “we will notify you once your PC is ready for Windows 10 and it has been downloaded on your PC. The best way to know your upgrade is ready is to look for this notification in your system tray.”

Read next: Why You’ll Actually Want to Use Microsoft’s New Web Browser

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