Hi Hopefully someone can help me with my issue. We have self developed hardware with three ARM CPUs on the board. For each one of the three CPUs we have connected a J-LINK PRO. Now if I want to debug I always can only debug two of the three CPUs in parallel. It is not possible to be able to debug all three in parallel and I cannot figure out why. Interestingly the startup order of JLinkGDBServerCLExe does not matter. Its always the behaviour that for the first two CPUs the startup works, the thi…