) was often tied to the specific installer language you downloaded. Fixed Language Installers

HKEY_CURRENT_USER\SOFTWARE\ACD Systems\ACDSee\150\ (Note: The number changes per version; 150 = v2025/2026. Look for the highest number).

[Current: English (default)]

| # | Feature | Description | |---|---------|-------------| | 1 | | Accessible from the status bar or a visible "Language" icon next to the Help/Account menu. No more hidden config files. | | 2 | No-restart toggle | Switch languages instantly without closing ACDSee (UI refreshes on the fly). | | 3 | Fallback translation mode | If a string is missing in the chosen language, auto-show English (or user-defined fallback) instead of blank or garbled text. | | 4 | Custom language pack import | Power users can load .po / .mo / custom XML files to fix or improve translations. | | 5 | Per-module language setting | Set Viewer in Japanese, Media Mode in German, Edit Mode in English – useful for multilingual teams or learners. | | 6 | Language sync with OS (optional) | Toggle: "Follow Windows display language" or "Stay independent" – with a one-click reset to OS default. |

Visit the ACDSee website and download the installer specifically designated for your preferred language (e.g., German, French, or Japanese).

If you changed your Windows Locale or reinstalled, but ACDSee retains the old language:

You changed the language to CHS/CHT, but your Windows OS lacks the East Asian font pack. Fix: Go to Windows Settings > Time & Language > Language & Region > Add a language (Chinese). Windows will automatically install the required fonts. Restart ACDSee.

Why language change matters beyond UX