Windows Feature Upgrade Guidelines

Unplug external devices

Disconnect all external devices that are not strictly necessary.

Update hardware drivers

Update all hardware drivers and execute the command below, from an elevated command prompt, to clean the driver store.

rundll32.exe pnpclean.dll,RunDLL_PnpClean /DRIVERS /MAXCLEAN

Update Windows

Download and install all available updates from Windows Update, including optional updates.

Uninstall security software

Uninstall third-party antivirus and security software.

Use the newest installation files

Always use the newest content package available.

Upgrade BIOS

Upgrade the system BIOS and related firmware.

Repair System Files

Repair the system files by executing the commands below, in the specified order, from an elevated command prompt.

DISM.exe /Online /Cleanup-image /Restorehealth

SFC.exe /scannow

Disable Roaming User Profiles

Disable roaming user profiles and folder redirection to ensure that user profiles are stored in C:\Users

Delete Obsolete User Profiles

Delete obsolete user profiles from the workstation.

Command Line vs. Graphical User Interface

The upgrade process behaves differently, depending on whether you run it using command line options or using the graphical user interface.

This causes many people to consider the upgrade process to be “unstable” when using the command line.

The CapaWinUpgrade service provided by CapaSystems are using command line options to perform upgrades, and is also affected by the circumstances described above.

References

Get help with Windows upgrade and installation errors (microsoft.com)

Resolution procedures - Windows IT Pro - Windows Deployment | Microsoft Docs

Use the System File Checker tool to repair missing or corrupted system files (microsoft.com)

Technical Blogpost | Troubleshooting Windows 10 IPU - CapaSystems