1) I was using Atom 1.13 and it was not working after windows patches installed. Then I installed the latest version - Atom 1.17, it is not working either.
2) when using command line atom --safe, same symptom, i.e.Atom appears in the task bar but the window of Atom doesn't show.
3) Cannot rename .atom folder. There was a popup window saying "You must type a file name".