Windows 10 had been installed on more than 14 million devices by Thursday evening, a small step toward the company’s goal of an installed base of 1 billion.

“While we now have more than 14 million devices running Windows 10, we still have many more upgrades to go before we catch up to each of you that reserved your upgrade,” the company said in a blog post at 6:28 p.m. Thursday.

The latest version of Windows saw a bumpy rollout on Wednesday, with problems including a “Something happened” error screen seen during the installation process. Other issues involved downloading apps from the Windows Store or copying text in the operating system.

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