ARM maintains an archive of legacy versions.
Solution: MDK 4.7's device database is static. Newer MCUs (e.g., STM32G0, H7, or newer PIC32MZ) are not supported. Your only options: keil mdkarm 47 download work
But if your STM32F103 "Blue Pill" is not recognized: go to Project → Manage → Pack Installer (wait – v4.7 doesn’t have it! Instead: Project → Select Device for Target and manually pick from list). ARM maintains an archive of legacy versions
This is where most users fail. MDK v4.7 was written for Windows XP/Vista/7. Making it work on Windows 11 requires compatibility tweaks. But if your STM32F103 "Blue Pill" is not
Keil MDK-ARM (Microcontroller Development Kit) is an integrated development environment for ARM Cortex-M microcontrollers. Version numbering historically reached MDK-ARM 4.x and 5.x; many references to “47” may mean MDK-ARM v4.7 or a specific build/release. Modern Keil MDK is maintained by Arm and distributed as MDK‑ARM (µVision IDE, ARM Compiler, RTX, middleware).
Do not use spaces in the path. Use:
C:\Keil_v47 instead of C:\Program Files\Keil.
Spaces in paths break some legacy build scripts and linker commands.