ANN: Inno Setup 6.6.0 released

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Martijn Laan

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Nov 12, 2025, 3:03:40 AMNov 12
to innosetup
Hi everyone,

Inno Setup 6.6.0 has been released.

Highlights are:
  • Setup and Uninstall now support dark mode, forced or automatic, and custom styles.
  • See the updated WizardStyle help topic for more information, special considerations, and example screenshots.
  • Alternatively, check out the new Wizard Style page in the New Script Wizard, allowing to choose a style and view example screenshots.
  • High-contrast users stay supported: custom styles are automatically deactivated if Windows high-contrast theme is active, and a new /NOSTYLE command line parameter is also available.
This new feature does not increase the size of Setup if not used and is fully backward compatible.

And also:
  • Updated wizard defaults bring larger windows, Segoe UI fonts, DPI-aware aspect ratios, and retire WizardResizable, while keeping WizardSizePercent.
  • Pascal Script gains IsWinDark, IsDarkInstallMode, stock icon helpers, command link button support, revised CreateCustomForm, and new math and color utilities.
  • Security hardening doubles random characters in temp names, switches to CSPRNG generation, randomizes Uninstall directories, and fixes TOCTOU edge cases.
  • Compiler IDE refinements improve dark-mode contrast, use 9-point Segoe UI, and extend Windows 11 dark menu support, plus scripts now accept #rrggbb colors, have more /SUPPRESSMSGBOXES coverage, and auto-recreate missing temp folders in a specific scenario.
Download: https://www.jrsoftware.org/isdl.php

For the complete list of what's new/changed, see: What's new in this version?.

If you are using Inno Setup commercially, please purchase a license. Thank you to everyone who has already done so. Your support keeps development going. Donations also remain welcome.

Greetings,
Martijn Laan and Jordan Russell

Martijn Laan

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Nov 20, 2025, 9:47:11 AM (7 days ago) Nov 20
to 'Martijn Laan' via innosetup on [innosetup]
Hi,

Inno Setup 6.6.1 has been released.

Among other updates, this version improves custom styles by preserving custom RTF text colors and introduces a new [Files] flag, notimestamp, to make it easier to reproduce builds.


For the complete list of what's new/changed, see: What's new in this version?.

Download: https://www.jrsoftware.org/isdl.php

Using Inno Setup commercially? Please purchase a license.
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