Language packs are version-specific. A language pack built for ZWCAD 2025 will not work on ZWCAD 2026. Open your current ZWCAD software. Type ABOUT into the command line and press .
Launch ZWCAD and go to Tools > Options > System . In the System tab, click on Language and select the language pack you just installed from the list.
Here’s a deep look into installing and troubleshooting language packs for (a CAD software similar to AutoCAD).