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When I use virtualbox windows guest ,I can't install visual studio in it .Even I use a vmware virtual disk with visual studio installed in virtualbox , it still can't run .But in vmware visual studio is normal ,so i think is there any bug with virtualbox or arch kernel.
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What error messages do you see when launching from a terminal? Googling for your exact error description suggest you need to explicitly enable the usage nested VT-X/AMD-V in the VB settings: https://forums.virtualbox.org/viewtopic.php?f=2&t=92755
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