You can now download and install the Windows 11 upgrade, but
there are a number of problems that some people are
experiencing during the installation process.
Microsoft has already acknowledged at least three known
issues with Windows 11, but there are multiple installation
issues affecting a small subset of users.
To download the Windows 11 version 21H2, you can check if it’s
available in Windows Update. If it is not available, you can
use Microsoft’s new “Windows 11 Installation Assistant” tool to
force the installation of the new operating system. However,
there is a catch – generic error message.
Windows 11 seemingly failing to install for some users via
Installation Assistant, producing an error “0x8007007f” which
is too generic to understand the root cause. The conflict seems
to be related to Windows 10 UAC permission for the installer,
storage space and drivers.
This is the case according to a number of reports reviewed by
“Error code 0x8007007f keeps occurring at around 71% through
the installation,” one user noted in a Reddit discussion. “The
Installation Assistant failed with error code 0x8007007F and no
insight. The Media Creation Tool just crashed,” another user
noted, describing the buggy upgrade process.
In addition to Reddit, we’ve also observed similar reports on
our forum and Twitter.
How to fix 0x8007007f error
Windows 11 0x8007007f error appears when users download and run
the Installation Assistant on supported hardware.
For most users, relaunching the Installation Assistant with
administrator privilege should resolve the error and allow the
tool to download and install the update.
At the same time, it’s possible that the vague error message is
related to having certain drivers installed. To address error
0x8007007, you can reboot the device or restart the
installation process. You can also manually install the fresh
drivers from the manufacturer’s website.
A quicker workaround may therefore be to simply
download Windows 11 ISO and mount it in the File Explorer,
and run the setup.exe.
Additionally, we’ve observed another error message “Ox8COF0830
“Ox8COF0830 – ox2W03 The installation failed in the SAFE_OS
phase with an error during INSTALL_UPDATES operation,” the
error message reads. This issue also appears to be related
to drivers, and a proper workaround is not available.
If you’re suffering from a Windows 11 upgrade problem that we
haven’t covered, simply use ISO images and perform an in-place
Obviously enough, those who find themselves unable to install
the upgrade will remain on Windows 10 and continue to receive
regular monthly updates from the company.
In case you’re wondering, Microsoft is aware of at least three
known issues in the operating system, including a bug that
could make your internet connection slower if you use Intel’s