If your mysql does not start from XAMPP and the Windows event viewer you see the following error: "XAMPP: Reading of some Master_info entries failed mysql" we have found a way to repair it.
It's very simple.
Go to the XAMPP data folder (normally in windows c: \ XAMPP \ mysql \ data \) and delete all the files that appear with the word master in directory and the file aria_log.XXXXXXXX.
With this simple process we have been able to solve it