Intellij does not startup

[KianRolf]

I run ide intellij and it shows me the regular log messages with success but no Intellij Window shows up no matter how often I repeat the ide intellij command. What am I doing wrong or what could I do to make it work?

[hohwille]

For some reason IntelliJ starts itself as a kind of daemon. That means if you run intellij (e.g. on Windows idea64.exe), it checks if an instance of that process is already running. In such case it only sends a message to that process asking to open the according project with the given parameters.

However, this daemon approach is not implemented bullet-proof but has some bugs.
It may happen that an IntelliJ process is hanging on your computer.
You then have to open your task manager and find the IntelliJ process (on windows search for idea64) and kill it.
After no IntelliJ process is left and you run ide intellij again, it is working again.
Unfortunately there is no way for IDEasy to detect if that problem occurred.
This is only a bug on IntelliJ and all we can do is offer this workaround to you as a help.