The build 19043.964 is a small update rolling out as KB5001391 that only includes a fix for an “0xC2 (BAD_POOL_CALLER)” error that has been causing Blue Screen of Death (BSoD) when using “IOCTL_SCSI_PASS_THROUGH_DIRECT.” If you missed the last update, this release also includes everything that the company fixed and improved with the update KB5001391 (build 19043.962).

Install Windows 10 21H1

If the device running version 20H2 is not enrolled in the Windows Insider Program, you first need to enroll it in the Beta or Releases Preview Channel before you can download the update. You can do this by going to Settings > Update & Security > Windows Insider Program and clicking the Get started button.  In the wizard, click the Link an account option, select your Microsoft account, and click the Continue button. Under the “Pick your Insider settings” section, select the Beta Channel option (or Release Preview Channel), and click the Confirm button. Confirm the terms and conditions, restart the device, and then use the following steps to upgrade. Then you can install Windows 10 21H1 going to Settings > Update & Security > Windows Update, click the Check for updates button, and then under the “Feature update to Windows 10, version 21H1” section, click the Download and install option. All content on this site is provided with no warranties, express or implied. Use any information at your own risk. Always backup of your device and files before making any changes. Privacy policy info.