Error 0x8007000d when installing Windows 11 Insider Preview Feature Update (26300.9032)

Since DISM and SFC completed successfully and the ISO upgrade also rolled back, this is probably no longer a Windows Update cache problem.

0x8007000D means that Windows encountered invalid data. 0x8007042B means that an upgrade process stopped unexpectedly, but it does not identify the actual cause. The useful error is normally a few lines earlier in the setup logs.

Try these steps:

1. Back up important files and stop repeating the installation for now.
2. Run Microsoft’s SetupDiag tool as administrator immediately after the rollback. Check SetupDiagResults.log for Matching Profile, Failure Phase, Failure Operation, and any named driver, application or DLL.
3. Also check these files:

C:\$WINDOWS.~BT\Sources\Panther\setuperr.log C:\$WINDOWS.~BT\Sources\Rollback\setuperr.log C:\$WINDOWS.~BT\Sources\Rollback\setupact.log

Start from the bottom and look above the final 0x8007042B entry. If a driver, service or application is named, update or uninstall that specific item before retrying.

1. Perform a clean boot, temporarily uninstall third-party antivirus, VPN, disk-management and system-tuning software, and disconnect unnecessary USB devices. Update the BIOS, chipset and storage drivers from the PC manufacturer.
2. Retry through Settings > Windows Update. Avoid using the UUP Dump ISO for troubleshooting because it is not an official Microsoft installation image and can introduce separate package or language-matching problems. Use an official Insider ISO for the same branch only if Microsoft provides one.

Build 26300 belongs to an experimental Insider branch, so this may also be a flight-specific migration bug. If SetupDiag does not identify a local driver or application, staying on 26300.8935 and waiting for the next flight is safer than repeatedly forcing 26300.9032.