I ran into a pesky issue the other day using MySQL workbench where the program itself simply would not launch. I could see the process running in Task manager in Windows, however, nothing would ever display, no errors, etc. It simply would run and not display. What was also unusual is that the program was working the day before – luanched, worked, and closed successfully without errors.
In googling the issue, I saw a similar bug report concerning the AppData cache folder here: https://bugs.mysql.com/bug.php?id=70713 However, in trying the solution by simply renaming the cache folder, this didn’t work for me. The issue still persisted – same behavior with the application executing and the process spawning but nothing displaying. I had the hunch to try removing the entire directory tree for MySQL in the AppData cache mentioned in the path for the bug report: C:\Users\your_user_name\AppData\Roaming\MySQL\Workbench\cache.
Instead of just renaming the folder, I moved (to be on the safe side) the entire Workbench directory to my desktop to test. After getting rid of the Workbench folder in the AppData path, MySQL launched perfectly. The only downside to removing the folder is that you will lose all of your saved connections and settings. However, I could live with this as this is a better scenario than the program not launching at all. Hopefully this will help someone who may be experiencing this similar issue.