How to fix it

0xC1900107 appears when Windows (an update or a fresh install) gets partway through and then has to roll back because something it needed didn't work — most often a driver. It's frustrating because the message is vague, but the fix is usually the same set of steps.

First — make sure it can actually run

  1. Check disk space. A feature update needs 20–30 GB free. Clear it up if you're tight.
  2. Run the Windows Update troubleshooter (Settings → System → Troubleshoot → Other troubleshooters → Windows Update). It clears a lot of stuck update state.

Update the drivers that commonly block installs

  1. Go to your PC or motherboard maker's support page (not a generic driver site).
  2. Download and install the chipset, storage/SATA, network and graphics drivers for your exact model.
  3. Reboot and try the update or install again.

Clean up programs that interfere

Some third-party tools — especially antivirus, undisks/partition tools and screen recording apps — interfere with Windows installs. Uninstall or disable any non-essential ones, retry, and reinstall them after Windows is happy.

If you're doing a clean install from a USB

Make sure the USB drive is USB 2.0/3.0 compatible and the installer is a fresh download (a corrupt ISO is a common cause). Re-create the USB with the official Media Creation Tool, and try a different USB port (a rear port on a desktop is more reliable than a front one).

Check the logs if it keeps failing

If it still rolls back, the real reason is in C:\Windows\Panther\setupact.log. Search it for the last error before the rollback — that line names the failing component, which usually points straight at the driver or program to fix.

0xC1900107 is almost always a driver or a program in the way. Update the chipset and GPU drivers, run the update troubleshooter, and clear out interfering software before retrying.