Download FULL latest version in case you've installed it via built-in update
"C:\Users\USERNAME\.WebIde60" (or maybe ".WebStorm60" -- not 100% sure) -- backup and delete (or just rename) that folder
Completely uninstall current WebStorm
Install full version again
Run it -- see if it will start:
it does -- you may restore your original settings from backup ("config" subfolder mainly; "system" can be regenerated from scratch by IDE)
it does not:
try disabling any antivirus or any other system-level software that you are currently running (firewall; backup -- this kind of things) -- maybe it somehow prevents IDE from starting (although very unlikley)
try uninstalling your recent windows updates (Control Panel | Programs and Features | View installed updates)
check if there will be anything in the log file: "C:\Users\USERNAME\.WebIde60\system\log\idea.log"
Hi Thomas,
No real ideas.
But lets try making it work again: