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Solution: MPLAB X v5.35 is the last version with stable native support for PICkit 3. You must install the legacy MPLAB Driver Switcher (available on Microchip’s GitHub). Run it as administrator. download mplab x ide v5.35
Recommend using v5.35 only for legacy maintenance. For new projects, download the latest MPLAB X IDE from Microchip’s official site. Microchip does not authorize mirrors
// hello_world.c
#include <xc.h>
int main(void)
// Configuration bits
__CONFIG(FOSC_INTOSC & WDTE_OFF & PWRTE_OFF & MCLRE_OFF & CP_OFF & CPD_OFF & BOREN_OFF & IESO_OFF & FCMEN_OFF);
// Initialize the LED pin as output
TRISB = 0x00;
while (1)
// Toggle the LED pin
PORTB = 0xFF;
__delay_ms(1000);
PORTB = 0x00;
__delay_ms(1000);
return 0;
| Use Case | Recommendation | |----------|----------------| | New project starting today | Use v6.10+ instead | | Maintaining a 2019-2020 project | Download v5.35 | | Using older compilers (XC8 v2.05, XC16 v1.60) | Download v5.35 | | Legacy hardware (PICkit 2 or 3) | Download v5.35 | // hello_world
Microchip does not prominently display older versions on their main download page. However, they maintain an official archive. We strongly advise against third-party mirror sites (which may inject malware) and only recommend official Microchip channels.