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Microsoft apologizes after rolling out unstable Windows 10 builds

by Killian Bell | June 2, 2017June 2, 2017 4:15 am EST

Microsoft has issued an apology to Windows 10 and Windows 10 Mobile users after accidentally rolling out a bunch of unstable builds on Thursday. The blunder happened because of an “inadvertent deployment to the engineering system,” the company says. It has offered instructions that explain how to roll back to a more stable release.

The incident began when Microsoft rolled out Windows 10 build 16212 for smartphones and 32-bit PCs. Despite being an unstable release, it was made available to everyone already running the Creators Update. Once this build was pulled, Microsoft accidentally rolled out another three for Windows 10 Mobile devices.

Despite recognizing the issue, Microsoft did little to prevent users from upgrading their devices. A single tweet from Dona Sarker, chief of the Windows Insider Community, was the only warning we saw about avoiding the updates. Now Microsoft has published a blog post apologizing for the inconvenience caused.

“This happened because an inadvertent deployment to the engineering system that controls which builds/which rings to push out to insiders,” the company explains. “The team was quick to revert the deployment and put blocks in place to stop these builds from going out to more people.”

Microsoft says that only a “small portion” of users actually installed these builds, but they are not recommended for devices that you rely on. “Please be aware that this build was never intended to go out to Windows Insiders and may include issues that impact usability of your PC,” Microsoft warns. It recommends rolling back to an earlier build.

You’ll find instructions on how to do that in Microsoft’s blog post via the source link below. Be aware than you have only ten days to roll back, and the process will only work if you haven’t already used Disk Cleanup to remove your previous Windows installation.


Killian Bell

Killian Bell is a 20-something technology journalist based in a tiny town in England. He has an obsession with that little company in Cupertino...