Eperm:operation not permitted, write. How can i fix this?

Flashing to an SD card in windows 10 and i get a fail with this as the reason.
what is it? The program or the SD card?

Hi there, please try starting Etcher as an Administrator Windows user, otherwise it may not have enough permissions to query/write the SD card.

apparently the issue may have been because i was using the portable version.
I installed it, ran it as admin, and it worked. the portable didnt work with admin control.

Thanks for letting us know.