Untested Windows 10 build 18947 mistakenly pushed to Insiders on all rings

What you need to know

• An untested build of Windows 10 is being pushed out to Insiders on all rings.
• Reports claim that 32-bit and 64-bit systems are receiving the build.
• Insider chief Dona Sarkar says that Microsoft is looking into it.

Updated July 24, 2019: Microsoft has acknowledged the unintentional release of build 18497, detailing steps to roll back for those who may have been offered the download. Microsoft recommends any who installed the build roll back to their previous build as soon as possible. The original story follows.

A version of Windows 10 20H1 that hasn't been tested internally was mistakenly pushed to Windows Insiders in all rings today. Windows 10 build 18947 is a canary build that is only a day old. Reports are appearing around the web that the build is appearing on 32-bit and 64-bit machines.

A Reddit thread has several users in it that claim the update has rolled out to their machines. Users on Twitter have also pointed out that the update is appearing on 64-bit machines.

Microsoft's Dona Sarkar, chief of the Windows Insider program, stated that Microsoft is "looking into it" in response to a question about the build rollout.

While there are several reports of users seeing the update, we have at least one Insider PC that hasn't seen the update yet. It's yet to be seen how many PCs will see this accidental update. If you're offered build 18947, it's advisable to pause updates to prevent running into any issues.

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