Release v2.2.1

[v2.2.1] – 2026-05-26

Upgrading from an earlier version? Total Commander keeps an
already-configured detect string when a plugin is replaced, so
users coming from v2.1.0 or earlier won't automatically pick up
the new universal file-type support — see
Upgrading from an Earlier Version in README.md.

Added

• Mark-of-the-Web detection and one-click unblock in the fallback panel.
  When the preview handler refuses to render a file, the fallback panel
  now reads the file's Zone.Identifier alternate data stream and, if
  the file is marked as having come from the internet (ZoneId>=3,
  i.e. Internet or Restricted zone), replaces the generic "handler
  failed" text with a tailored explanation: the security zone, the
  originating URL if present, and a plain-language description of what
  Office's Protected View does and why. An Unblock this file and
  retry the preview button is shown at the bottom of the pane; one
  click strips the Zone.Identifier ADS (equivalent to PowerShell's
  Unblock-File or right-click → Properties → Unblock) and re-runs
  the LOAD in the same mode the user was in, so the document opens
  without leaving the Lister pane. The button is only shown for
  MOTW-blocked files; for all other failure causes the fallback panel
  is unchanged.

Fixed

• Cross-process window reparenting in Full mode no longer causes
  Total Commander UI stutter. Office application windows (Word,
  Excel, PowerPoint) are now hidden with ShowWindow(SW_HIDE) before
  SetParent strips their top-level frame and reparents them into the
  Lister pane. Previously the reparent happened while the window was
  still visible — PowerPoint in particular cannot be started invisibly
  (Application.Visible = False is rejected) — which forced Windows
  to synchronously reconcile window state across three processes
  (TC → host → Office) and made Total Commander's own modal dialogs
  (copy, overwrite confirmation, …) feel sluggish and jerky while a
  Full-mode preview was active.

  On detach (UnloadWordFullSta, UnloadExcelFullSta,
  UnloadPptFullSta) each app's window now receives
  SetWindowPos(..., SWP_FRAMECHANGED | SWP_HIDEWINDOW) after its
  style is restored to WS_OVERLAPPEDWINDOW. Without this the window
  manager could leave the frame in an inconsistent state (a top-level
  window without caption or borders) until the next paint, producing
  "ghost" windows that continued to interfere with focus and Z-order.