Disable file transfer in Skype, DisableFileTransfer

Add this key in computer startup script to disable sending files

reg add "HKLM\SOFTWARE\Policies\Skype\Phone" /v DisableFileTransfer /t REG_DWORD /d 1 /f

Remove key. Enable file transfer in skype

reg delete "HKLM\SOFTWARE\Policies\Skype\Phone" /v DisableFileTransfer /f