Cannot connect to my printer i3Mk2s  

Cannot connect to my printer i3Mk2s

Hi all,

I am having trouble connecting to my printer to update the firmware. I keep getting this error message. [see below] I am not connect to the printer via any other software so the com port should be open.

Thanks in advance.

[avrdude.exe: ser_open(): can't open device "\\.\COM3": Access is denied. avrdude.exe: ser_drain(): read error: The handle is invalid. avrdude.exe: ser_send(): write error: sorry no info avail avrdude.exe: stk500_send(): failed to send command to serial port avrdude.exe: ser_recv(): read error: The handle is invalid. avrdude.exe: stk500v2_ReceiveMessage(): timeout avrdude.exe: ser_send(): write error: sorry no info avail avrdude.exe: stk500_send(): failed to send command to serial port avrdude.exe: ser_recv(): read error: The handle is invalid. avrdude.exe: stk500v2_ReceiveMessage(): timeout avrdude.exe: ser_send(): write error: sorry no info avail avrdude.exe: stk500_send(): failed to send command to serial port avrdude.exe: ser_recv(): read error: The handle is invalid. avrdude.exe: stk500v2_ReceiveMessage(): timeout avrdude.exe: ser_send(): write error: sorry no info avail avrdude.exe: stk500_send(): failed to send command to serial port avrdude.exe: ser_recv(): read error: The handle is invalid. avrdude.exe: stk500v2_ReceiveMessage(): timeout avrdude.exe: ser_send(): write error: sorry no info avail avrdude.exe: stk500_send(): failed to send command to serial port avrdude.exe: ser_recv(): read error: The handle is invalid. avrdude.exe: stk500v2_ReceiveMessage(): timeout avrdude.exe: ser_send(): write error: sorry no info avail avrdude.exe: stk500_send(): failed to send command to serial port avrdude.exe: ser_recv(): read error: The handle is invalid. avrdude.exe: stk500v2_ReceiveMessage(): timeout avrdude.exe: stk500v2_getsync(): timeout communicating with programmer avrdude.exe done. Thank you.}\]