MC V17 Early Access PREVIEW 4

[Mathias (Author)]

Preview #4

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Version 17 is not ready for stable release anytime soon, But it already has a lot of new things that need testing

Not everything added to v17 might be included in the final release.
v17 contain many MAJOR rewrites and new addition.

• File Tags/Labels and comments system
• Folder Specific settings
• New Keyboard customization system
• Total rewrite of List/Grid UI component used for File List view, FolderTree view, Most List/Grid UI componets. Without this rewrite all the 3 items above would not be possible
• MultiFileViewer can now show CSV/Parquet files as data in a grid. and if it is CSV it can be edited and modified and saved backed
• Some extension in MC can now be developed using .Net/C#
• Checksum extension now support Blake3 checksum algorithm

This is a early preview. Since it is a early preview it is time locked. and will stop to work after sep-30. (but a new updated version will be out.. )
However it will not be possible to auto update this version until in reached beta. there might be more 16.x releases with fixes before this is officially out

Since this is early preview. NOW is the time to come with feedback you want something to change. How a features with file tags or folder specific settings works or something like that.

Since this preview is developed separately from v16.x, When a new preview is released, it might not have all the fixes or addition that 16.x has. Right not V17 Preview has everything 16.2 build 3205 has. (I think)

Read more and see images here
https://multicommander.com/Articles/multicommander-v17-preview-1

Download portable version here (64bit only) (Preview 4)
https://multicommander.com/files/updates/preview/MultiCommander_x64_Portable_(17.0.0.3440).zip






Test and leave feedback
Please do testing specially on Tags.. 
How does tags work for you,  What missing with tag.. How can it be improved.  What does not work with tags. and so on.

Changes

Code Select Expand

v17 PREVIEW 4 (Build 3430 - 2026-10-19)

  ADDED - Split file and Join files commands in the Tools menu and file context menu. Compatible with Total Commander, HJSplit and 7-Zip split files.
  ADDED - Expand / Shrink selection can now use multiple filters, one per line, mixing wildcard, size, date and regex filters.
  ADDED - FileType Setup - Custom icons for specific files and folders.
  ADDED - FS-7Zip now support compressen method and compress level for when creating 7zip archives.
  FIXED - File list no longer jumps to another scroll position when refreshed while scrolled down.
  FIXED - Horizontal scrollbar flashing by on refresh when columns are auto-sized to the view width.
  FIXED - Clicking on empty space in the file list did not unselect all items.
  FIXED - ${mcpath} icon paths not loading in the icon picker in FileType Setup.
  FIXED - Thumbnail list mode - Missing gridlines and checkboxes covered by the image.
  FIXED - Italic text being clipped at column edges.

v17 PREVIEW 3 (Build 3415) - 2026-09-28

Around 25+ Changes since Preview 2

  FIXED - Folder specific settings dialog changes
  ADDED - MultiFileViewer - Can now specify number of rows to skip when reading CSV data.
  ADDED - Shortcuts can now be assigned to Edit comment and Clear Comment
  FIXED - CSV Data grid now handle many columns better.
  ADDED - Shortcuts can now be assigned to Tags, Tags  popup
  FIXED - Rendering of file tags, Will not overwrite entire filename
  FIXED - Range selection (shift+click) issue.
  ADDED - Some new icons to be used in file tags
  ADDED - Support for converting and saving images into WebP format
  FIXED - Many other minor fixes.
  + All fixes in v16.5 up to build 3222

[Mathias (Author)]

Download portable version here (64bit only) (Preview 4)
https://multicommander.com/files/updates/preview/MultiCommander_x64_Portable_(17.0.0.3440).zip

[total_annihilation00]

Thanks for fixing everything, Mathias—you've really brightened my day ! It's working brilliantly now. Custom file and folder icons make a huge difference when working with lots of items.
I tested Color Rules, and they're working well. I had to adjust the color selection a bit, but haven't encountered any issues with the rules themselves. Also Gridlines, Italics-clipped text, deselecting when clicking empty area; all flawlessly working now !
Hopefully we can move to a stable release soon, as I may not have internet access when Windows 10 Extended Security Updates end (I believe that's in 2028).
One minor issue: the file list occasionally became unsorted during file operations (I think), and I had to press F5 to refresh. Nothing serious, though.
P.S. In Thumbnail Mode, there's a slight delay when I first drag the scrollbar in a folder containing 391 files, most of them compressed images around 3 MB each (they're AI-generated wallpapers and I use an AutoHotkey script to control the mouse via the keyboard —there's no lag in Detailed Mode.)