Azure IoT Edge – exec user process caused “exec format error”

If running Edge on a Raspberry Pi  and an Edge container’s logs show  ‘exec user process caused “exec format error”‘ as an error then most likely you are running a non Raspberry Pi container on the Raspberry Pi. If the docker file used to build the container starts with:

  • FROM microsoft/dotnet:2.0.0-runtime

or

  • FROM microsoft/dotnet:2.0.0-runtime-nanoserver-1709

then the line above should be changed to one of the following:

  • FROM microsoft/dotnet:2.0.5-runtime-stretch-arm32v7
  • FROM microsoft/dotnet:2.0-runtime-stretch-arm32v7
  • FROM microsoft/dotnet:2.0.5-runtime-deps-stretch-arm32v7
  • FROM microsoft/dotnet:2.0-runtime-deps-stretch-arm32v7
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