Issues with connecting Pronterface to Anet A8 printer
After some trial and error, I discovered you need to set the baud rate to 115200 in the printer settings. I went through and tried each of the baud settings available until it connected. Glad I started with Pronterface, as RepetierHost has a lot longer baud list :o) Setting the baud rate is not inuitive as to the issue, as getting back "access denied" to me implied something else was going on. After that, was able to run direct commands to the printer through the USB port without issues.