https://devzone.nordicsemi.com/f/nordic-q-a/111638/mdk-update-8-63-1-for-gcc---default_handler-reset_handler-collisionsHello, I recently upgraded the MDK from an &quot;inherited&quot; much older version in my project to MDK version 8.63.1 for GCC. There is now a file called startup_nrf_common.c that contains definitions of Reset_Handler and Default_Handler . Unfortunately theseen-USTelligent Community 13Thu, 30 May 2024 12:45:53 GMThttps://devzone.nordicsemi.com/thread/486672?ContentTypeID=1Thu, 30 May 2024 12:45:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5b13654a-7675-45cc-8c15-587286865041Einar Thorsrud<p>Hi,</p> <p>You should not need&nbsp;startup_nrf_common.c, anb by removing it you avoit the conflict. (You can refer to how the MDK is integrated in nRF Connect SDK 2.6.1 which use 8.60.3. That MDK also include&nbsp;startup_nrf_common.c, but it is not included in the SDK.)</p><div style="clear:both;"></div>