Run the Assistant as an Administrator A third-party background app could be interfering with the Windows 11 Installation Assistant utility, causing it to fail. As such, the most popular solution to the 0x8007007f error is to run the Windows 11 Installation Assistant as administrator.
Run the Assistant as an Administrator A third-party background app could be interfering with the Windows 11 Installation Assistant utility, causing it to fail. As such, the most popular solution to the 0x8007007f error is to run the Windows 11 Installation Assistant as administrator.
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Restart or change your computer.
Thoroughly scan your computer with good antivirus software.
Try other USB ports.
How to fix “Error code: 0x8007007f” in Windows 11 Setup Assistant? Run the installation of Windows 11 as a wizard and administrator. The first thing to do when you encounter the specific error code in question is to start Windows 11.
Contact User Account Control.
Free up space on the system partition.
Update your graphics driver.
Perform an SFC scan.
Restore system default settings using a third-party utility.
Run the System File Checker, search for Command Prompt, then right-click on the best match result and don’t forget to run as administrator.
Type sfc /scannow then press Enter to start scanning your PC.
Wait until the scan is 100% complete.
Restart someone’s computer and try again, which will bring up Windows 10:
Press the Windows and I keys on your keyboard to launch the settings.
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Open an elevated cmd, right-click on the command prompt icon and select “Run as administrator”.
Run the following commands step by step: sfc /scannow /online dism /cleanup-image /scanhealth /online dism /cleanup-image /restorehealth.
Uninstall driver and reinstall from hard drive
To fix error 0xC1900101, users can also try uninstalling and reinstalling the driver. Right-click the target hard drive driver and select Uninstall. Your system computer and Windows will check if the driver needs to be reinstalled.
At the time of this writing, Microsoft has not disclosed the exact cause of error code 0x8007007f in the Windows 11 setup wizard. Insufficient administrator rights, corrupted system files, or outdated drivers are considered as possible causes for this entire error.
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