Keil MDK-ARM Version 4.74: Overview and Download Guide Keil MDK-ARM Version 4.74
: If you are using the modern MDK v5 but need to compile older projects, Keil provides a Legacy Support Pack keil mdk 474 download
| Feature | MDK 474 | MDK 5.xx (Current) |
|---------|---------|---------------------|
| IDE | µVision 4 | µVision 5 |
| Compiler | ARMCC 5.03 | ARMCLANG (v6) or ARMCC 5 (optional) |
| Device Support | Monolithic database (1 file) | Software packs (device families) |
| RTOS | RTX v4 | RTX5 / CMSIS-RTOS2 |
| Project File | .uvproj (binary) | .uvprojx (XML-based) |
| Windows 11 Support | Limited (bugs possible) | Full |
| Size | ~350 MB | ~1.2 GB + packs |
| License cost | Discontinued (legacy pricing) | ~$4,000–$12,000/year | Keil MDK-ARM Version 4
Official download: You can find legacy versions on Arm's official website: Launch µVision and confirm compiler version (Help →
Use MDK v5 with Legacy Support
MDK v5 can include the ARMCC v5 compiler as a legacy add-on. You can then open v4 projects.