Only single file transfer possible PC-internal sdcard

[lowprofiledroid]

I tried transfering files in bulk, but the PC gives a failure message. Single files work fine.
I tried from PC and laptop With different cables. The phone has lollipop installed. The 2 different cards were tested and formatted in the phone.THX for reply!
Transfer of files from the internal SDXC card to a hard drive works fine too.

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