Hey !
I have retarget a mixamo skeleton to the anim starter pack but when i play an anim, the arms of my mixamo character aren’t normals. I try to export and reimport but there are errors 
Hey there Smovit, to help us help you, please could you paste screenshots of your problem for better context? A lot more people could and would want to help you that way. From my experience with Mixamo, you need to make sure you’ve downloaded the models and animations in the correct format for UE4 i.e. there was an fbx option specifically for UE4 when I used it in 2015. Downloading it in that format and making sure the import settings are correct usually did the trick. There are also a lot of YouTube tutorials showing how to correctly import and use the Mixamo models. Perhaps try those step by step and see if they work for you? I think might be what you are looking for: Unreal Engine 4 - Mixamo to Unreal Engine 4 - FBX Import - YouTube Sorry I can’t be of more assistance. I have only used Mixamo once in the past as I mentioned above.
Ho I have resolved my problem !!! When i retargeting animations, The 2 characters doesn’t have the same pose.
Awesome Smovit! Please mark your question as answered (with your answer ofc) and thank you for posting the solution for others to see! 