Releasing Windows 10 Build 19043.964 (21H1) to Beta & Release Preview Channels

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published April 28, 2021

Hello Windows Insiders, today we’re releasing 21H1 Build 19043.964 (KB5001391) to the Beta Channel & Release Preview Channel for those Insiders who are on 21H1.See our blog post here on preparing the Windows 10 May 2021 Update (21H1) for release.

This update includes all the fixes in 21H1 Build 19043.962 plus the following additional fix:

  • We fixed an issue causing a 0xC2 (BAD_POOL_CALLER) bugcheck when using IOCTL_SCSI_PASS_THROUGH_DIRECT.

The Windows Insider Program Team