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Suddenly will say "Failed to Establish Connection with the Printer"

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All of a sudden, my computer will just stop being able to connect to my printer. I get the "failed to establish connection with the printer" error.. However, when I plug in the ultimaker with my USB cable, I get the "ba-dum" sound from windows, and everything is plugged in (I can hear the fan running).

It's strange, this will actually happen while I'm testing it. For example, while I'm doing one of the alignment runs, the block temperature will start rising, and then all of a sudden just stop.

Error log:

Changing monitoring state from 'Offline' to 'Detecting serial port'

Serial port list: []

Failed to open serial port (AUTO)

Changing monitoring state from 'Detecting serial port' to 'Error: Failed to autodetect...'


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Well, much the same with me. I run a print, then if I want to run a second print, I get "Serial Timeout exception" and the machine cannot connect anymore. Unplugging the usb cable, turning off the printer, restarting CURA, nothing works except a total restart of the computer.

Pronterface works all the time though....any ideas?

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