Looking for logging into the Sql Failed For User site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Sql Failed For User site. After that you can login as usual with your login credentials.
http://www.google.com.tr/url?url=http://itproguru.com/expert/2014/09/how-to-fix-login-failed-for-user-microsoft-sql-server-error-18456-step-by-step-add-sql-administrator-to-sql-management-studio/
https://www.yazilimkodlama.com/sql-server-2/sql-server-18456-hatasi-cozumu-login-failed-for-user-sa/
https://support.microsoft.com/tr-tr/help/555332/login-failed-for-user-error-message-when-you-log-on-to-sql-server
https://social.msdn.microsoft.com/Forums/tr-TR/9f7833cd-da52-49f6-b33f-2d279b56a456/login-failed-for-user-sa-microsoft-sql-server-error-18456%3Fforum%3Dcsharptr
https://support.microsoft.com/en-sg/help/555332/login-failed-for-user-error-message-when-you-log-on-to-sql-server
https://stackoverflow.com/questions/17372606/sqlserver-login-failed-for-user
https://www.youtube.com/watch%3Fv%3DGDoOg_oeKEI
https://www.youtube.com/watch%3Fv%3DaU8RhjdkCoE
https://mekaney.wordpress.com/2011/12/30/sql-server-baglanti-hatasi-login-failed-for-user-x-the-user-is-not-associated-with-a-trusted-sql-server-connection/
https://serverfault.com/questions/2218/sql-server-issue-login-failed-for-user-username
http://www.google.com.tr/url?url=http://support.pitneybowes.com/VFP06_KnowledgeWithSidebarTroubleshoot%3Fid%3DkA280000000CoakCAC%26popup%3Dfalse%26lang%3Den_US
https://dba.stackexchange.com/questions/29613/login-failed-for-user-error-18456-severity-14-state-38