Hi @Koen Gillissen ,
After some deeper research, it appears the the Log Analytics agent does not support ARM-based platforms, you'll find the supported Windows and Linux operating system versions over here:
https://learn.microsoft.com/en-us/azure/azure-monitor/platform/agents-overview#supported-operating-systems
There's an uservoice request for supporting this for ARM platforms over here:
https://feedback.azure.com/forums/267889-azure-monitor-log-analytics/suggestions/16883320-make-the-oms-agent-work-on-linux-with-arm-architec
You could try the following though:
https://github.com/microsoft/OMS-Agent-for-Linux/issues/997
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Best regards,
Leon