Microsoft has released Windows 10 Build 19043.964 (21H1) to Windows insiders in the beta and release preview channels.

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

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.

Thanks,
The Windows Insider Program Team

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