V4 BETA

[OneCommander Support]

I’m looking for more people to try OneCommander v4 beta. Current public version is v3, but v4 has a lot of internal improvements: faster browsing, smoother scrolling, a new folder-size system, integrated Taskmaster file operations, better metadata/previews, improved email handling, customizable toolbar/icons/views, better session/window restore, and a major visual/theme overhaul.  

Biggest changes in v4 

1. Much faster and smoother file browsing

v4 has multiple performance rewrites: faster file rendering, smoother scrolling, better thumbnail handling, reduced UI stalls when browsing slow drives/network folders, and improved responsiveness while Windows or disks are slow to respond.

2. New folder-size system

Folder sizes no longer rely on Windows infotips. v4 has its own folder-size database, faster scanning, better handling of large folders, mount points, inaccessible folders, and eventually sorting by folder size once sizes are known.

3. Taskmaster is now integrated as the default file operation engine

Copy/move/delete/rename operations are now handled through the integrated Taskmaster system, with better tracking, UI feedback, copy-paste improvements, database updates for moved files, and undo support for file operations.

4. Major visual/theme overhaul

v4 introduces a much more customizable UI system: dark/light theme work, Mica/Acrylic effects, sharper icons, theme accent-color improvements, theme metadata, active/inactive browser styling, and a Theme Editor Helper window for testing theme controls.

5. Customizable toolbar, menus, icons, and views

V4 has a more classic toolbar, users can customize toolbar buttons, change toolbar/menu icons, use new Win11-style dual-tone icons, edit file views from the new Resources\Views structure, and adjust interface elements more deeply than in v3.

6. Better window/session management

v4 improves restoring windows and sessions, including multiple windows, virtual desktop restoration, saved windows, temporary windows, named windows, and new-window behavior. Autostart/session restore behavior was also improved.

7. Improved metadata, previews, and thumbnails

Metadata extraction was partially rewritten for speed and reliability. v4 adds or improves metadata for documents, PDFs, media duration/resolution/date taken, PSD files, email files, EXE certificates, cloud status, and richer details/preview panes.

8. Better email file support

Email handling has improved across Outlook, New Outlook, and Gmail drops. Email files now show metadata counts, body previews in rich view, additional details, naming-format presets, and improved formatting behavior.

9. Better search, sorting, and navigation

v4 includes settings search/filtering, grid view for search, better search-window layout, improved sorting controls, Alt+Left/Right navigation, more reliable focus behavior, and fixes for edge cases like searching names with periods.

10. Many stability fixes

The log includes repeated crash fixes, Recycle Bin fixes, startup fixes, updater fixes, Windows 10/11 visual fixes, network-path freeze prevention, folder watcher fixes, and many smaller regression fixes.

Important note for testers

v4 is still beta and focused mostly on stability, polish, themes, performance, and bug fixing. Some areas are still work-in-progress, especially theme keys, icons/logo, and visual consistency.

Post v4 feedback and bugs here https://github.com/m1l/OneCommander-Feedback/issues

You can post feedback here also, but Discord is more active and has channel for Beta

https://discord.gg/wN6ctNjEtR

Current version (portable only at this time; extract in new folder)

https://onecommander.com/OneCommander0.0.36.0.zip

[OneCommander Support]

Latest: https://onecommander.com/OneCommander0.0.38.0.zip

[OneCommander Support]

0.0.40.0
Migrated from .NET8 to .NET10; should be faster and more efficient (and has Microsoft's support until 11/2028 instead of 11/2026 for .NET8)
Many libraries updated
Fixed monitoring for changes of mounted WebDAV drives (also Cryptomator vaults)
Some bugfixes
Note: going forward you will need .NET10 runtime
https://onecommander.com/OneCommander0.0.40.0.zip

[OneCommander Support]

0.0.42.0 (2026-05-30)
Machine translation and other languages, plus .fa and .id added
Drag&drop fix from zip opened in Explorer (change resulting from moving to .NET10). Other places using IDataObject should also work
Removed delay on start in some situations
More libraries updated to modern .NET
Code cleanup

+ log of 0.0.41.0 (2026-05-29) I didn't publish yesterday
Taskmaster saving/restoring position
OEM key handling (fixes typing ç in Portugese and likely other languages in textboxes, where a letter is mapped to OEM key)
Context menu crash issue (one report, please report any context menu crashes from .39 to this)
Fixed drag area on titlebar being too large
Few other small bugfixes

Known issue:
Tab migation after updates still needs more work

https://onecommander.com/OneCommander0.0.42.0.zip

[OneCommander Support]

0.0.44.0 (2026-06-04)

• Tested to run as ARM64 native app on Windows 11 on ARM
• Updater is also .NET10 now

New folder structure:

• ResourcesInstall   // app-shipped defaults, replaced by updates
• UserResources      // user-owned copy
• Settings           // machine/app state
  • Preferences.json   // was OneCommanderV3.json
• Caches
  • Thumbs and folder size cache

If updater fails from .40-.43
Option 1: Open OneCommanderUpdater.deps.json in notepad, remove "c:" from beginning of the file and start again
Option 2: Extract in new folder and paste over existing v4 beta folder (OC must be closed for that and no OneCommanderConnector running in background)

https://onecommander.com/OneCommander0.0.44.0.zip