Intellij Idea 2017.2 settings will not open Windows 10

Try to delete IDE folders to start over (https://intellij-support.jetbrains.com/hc/articles/206544519).

Latest update does this again now as well... ;/

Sigh... having to reconfigure the settings and plugins again and start from scratch cause of an update... ;/

where are the log files to see the error when idea64.exe doesn't even open... event viewer shows nothing, and the default logs obviously aren't doing... anything

Run with idea.bat in cmd.exe to see the errors.

If it's a native crash, look for java_error_in*.log files in the user home directory.

This just happened again with the latest update. Luckly you can just delete the system directory in the .IntelliJIdea2018* directory, this will keep your current configurations and you should be able to access the settings as well. At least it's working for me but ymmv...

I don't know if it was the issue for you, but for me the issue was that the last time when I have used the IDE, I have dragged the settings window to a secondary monitor (third monitor to be exact), which was switched off when I have re-opened the IDE, and I thought that the settings menu doesn't work while it was actually opened on the monitor which was switched off.

EDIT:
I have noticed that sometimes the settings window really is not visible, and the IDE doesn't respond to any action (clicking on anything visible), but if I press Alt+F4 then it closes the invisible settings window and it works fine when I re-open it (only the settings has to be re-opened, not the whole IDE).

Just updated to the latest version 2018.2.3 and the same happened to me (unresponsive IDE when entering settings), I followed the advice provided by István Ujj-Meszaros above (press Alt+F4) which closes the invisible settings and allows the IDE to function again.

Hello Grant,

Did you face the issue only once or it occurs permanently?

I am encountering the same issue described by István Ujj-Meszaros and Grant Pullen: Sometimes after selecting File -> Settings, the Settings window is not visible and the IDE does not respond to any action. Pressing Alt+F4 fixes it. Using IntelliJ IDEA 2018.2.5 (Community Edition), build #IC-182.4892.20 on Windows 7 Professional.

@Michael Blake looks similar to https://youtrack.jetbrains.com/issue/IDEA-187439. Does it happen at random? Do you have external monitors connected?

Andrey Dernov, What do you mean by external monitors? I have a multi-monitor setup. The issue I've encountered looks similar to some of the descriptions in https://youtrack.jetbrains.com/issue/IDEA-187439 (for example a multi-monitor setup on Windows 7. And multiple modal dialogues are impacted, not just Settings), and different from some of the descriptions there (It is not the case that the modal dialog appears then disappears. When the issue occurs, the modal dialog isn't ever visible). I have only been using IntelliJ for one day, so I do not have enough experience with the issue to determine if it is random. What I can say is that the issue occurred three times during the first day, as I was getting IntelliJ setup. Twice with the File -> Settings modal dialog and once with the File -> Project Structure modal dialog.  

Thanks for the info. Do you change the monitor configurations (plug/unplug it)?

I can change the monitor configurations (plug/unplug them). The monitor configuration was not changed (plugged/unplugged) while I was using IntelliJ yesterday.