Umbraco Backoffice Login stop working suddenly

Question

I am using UmbracoCMS 7.6.2 in one of my site.

Today when I tried to login in Umbraco backoffice using mysite/umbraco, will my working credential, it shows me error:

Answer 1

I had the same problem with the Umbraco version 7.7.4 assembly: 1.0.6505.22489. I have tried different ways to solve the problem.

I got a solution when I synchronized my local database with my online database.

The problem was on the table umbracoServer and umbracoUser. I only updated those, and my backoffice started working again.

Answer 2

You probably tried to login with the wrong password too many times and umbraco locked you out.

To fix this go to the database, open umbracoUser table and update userNoConsole to 0 for your username.

Answer 3

it finally working.

I've change the useLegacyEncoding="false" to true and it starts working normally.