Features

Columns

• Enabled - whether the image has the capability now
• Downloaded - whether the packages the row needs are already in the update cache; shows the progress bar while they download
• Installed - the size the capability takes once installed. A group row sums its ticked rows and counts an unticked installed row as negative, so a collapsed group states the disk change this run makes

With descriptions set to show on hover, Downloaded and Installed move into the hover card with them. The note beside the search box shows how many rows still need a download, and the installed size.

DownloadPremium

Packages download on two occasions, both started by you:

• Download on the toolbar fetches the packages of every ticked row into the update cache ahead of time. It becomes available once a ticked row is not cached yet
• Apply fetches whatever a tick still lacks, right before enabling it. The Apply page marks such a row with [Download], the same mark a queued update that was never downloaded carries

Loading an image never downloads anything. Every downloaded package is kept only when it carries a valid Microsoft signature, and the cache is reused by every later image of the same Windows version.

Languages

Each language is a group: its display language pack is the first row, followed by the language's capabilities (basic typing, fonts, handwriting, OCR, speech). Ticking the pack queues it on the Updates page, where it is integrated ahead of any cumulative update. A pack goes further than the install image: Windows Setup (boot.wim) and the recovery environment get the matching WinPE language, and the row's hover card names the loaded images it goes to. A boot.wim or WinRE loaded on its own lists the WinPE languages.

A language pack you added yourself on the Updates page shows ticked and locked here; the tab never removes a file of yours.

When a Download Fails

A blocked connection asks whether to retry, naming a firewall or proxy as the likely cause. What still could not be downloaded is reported once, after the run: the capabilities that were not installed, and why. Where an offline copy cures it, the report also names the Features on Demand ISO to get and the folder to extract it into, the FOD folder of that Windows version under the update cache (Menu → Settings). Extract the whole ISO there and run again; nothing needs to be picked out of it by hand.

Microsoft publishes no Features on Demand disc link for Windows 10 versions before 1809 or Windows Server 2016. On those images enabling a capability asks for the folder holding its packages instead.

What the Tab Lists

The list is read from the image, so it matches the Windows version and edition loaded. A deployed Windows lists the full catalog of its build; a mounted image file lists fewer rows. Typical entries:

• .NET Framework 3.5
• Remote Server Administration Tools (RSAT)
• OpenSSH Client and Server
• Media Feature Pack (N editions)
• Notepad, Paint, WordPad, Steps Recorder, PowerShell ISE, Windows Media Player Legacy
• Internet Explorer mode, Math Recognizer, Windows Fax and Scan, XPS Viewer
• Print Management, Wireless Display, Windows Hello Face, WMIC
• SNMP and the WMI SNMP Provider, Storage Management, TPM Diagnostics
• Graphics Tools, Developer Mode, MSIX Packaging Tool Driver
• Wi-Fi and Ethernet driver sets
• Per language: display language pack, basic typing, handwriting, OCR, speech, text-to-speech
• Supplemental fonts, per script

Step-by-step: Features on Demand, Language Packs and Media Feature Pack guides.