Keep your ears open
AVR Studio 4.19 is the final and most stable release of the legacy "Version 4" series of Atmel’s Integrated Development Environment (IDE). Despite being replaced by the more modern Microchip Studio (formerly Atmel Studio), it remains a "hot" choice for developers working with older 8-bit AVR microcontrollers due to its speed and simplicity. Why AVR Studio 4.19 Remains Popular
Point the "avr-gcc.exe" and "make.exe" paths to your WinAVR installation folder. 3. Solving the "64-bit Windows" Bug avr+studio+419+hot
For many students and hobbyists, 4.19 is the definitive "no-nonsense" tool for learning the AVR RISC architecture because it removes the bloat of modern software suites. AVR Studio 4.19 и AVR Toolchain | - EasyElectronics.ru AVR Studio 4
Modern Windows versions require specific "tricks" to run this legacy software correctly: AVR Freaks Preparation: User Account Control (UAC) temporarily: Go to Point the "avr-gcc