MySQL Users are gone (lost) after a MySQL 5.5 update in MS Windows
(Doc ID 2346803.1)
Last updated on APRIL 03, 2018
Applies to:MySQL Server - Version 5.7 and later
Information in this document applies to any platform.
After Updating MySQL 5.5 to a newer version using the .msi installer (for example: mysql-advanced-5.5.58-winx64.msi) all the existing MySQL users and gone, and it's not possible to login into MySQL even using the root account
To view full details, sign in with your My Oracle Support account.
Don't have a My Oracle Support account? Click to get started!
In this Document