Windows 11 Reinstalling windows 11 while keeping all files. Error: 0xC1900101 - 0x40021 The installation failed in the SECOND_BOOT phase with an error during SYS

  • Thread starter Thread starter Nathan Hay
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Nathan Hay

I am receiving the following error when trying to reinstall Windows 11 Pro via a USB drive.0xC1900101 - 0x40021 The installation failed in the SECOND_BOOT phase with an error during SYSPREP_RESPECIALIZE operationI've tried to look online and found nothing helpful. I really need to reinstall as windows is acting very funky and crashing repeatedly even when running simple tasks. I am fairly sure it's not my hardware, as I am running a midrange system with 32gb ram, Gigabyte 4080, Ryzen 9 (12 core processor), b550-f motherboard.

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