Com Port not working Arduino Uno

Development Tools IDE 1.x
6

To summarise:

  1. Device shows up in device manager
  2. Device does not show up in IDE.

I only had to deal with the "could not start" a week or so ago when I updated a FTDI driver. Updating it a second time solved the issue.

"Driver signing" is a Windows issue; maybe some tips in Com Port not working Arduino Uno can help.

Sorry that I can't be of much help.