Looking for logging into the Failed For User Sa 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 Failed For User Sa site. After that you can login as usual with your login credentials.
https://stackoverflow.com/questions/3583605/login-failed-for-user-sa-the-user-is-not-associated-with-a-trusted-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://www.youtube.com/watch%3Fv%3DUkuaRiT-5Qk
https://www.youtube.com/watch%3Fv%3DOL-pLkfba7I
http://www.google.az/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://www.eukhost.com/forums/forum/technical-support/tutorials-how-tos/12628-login-failed-for-user-sa-microsoft-sql-server-error-18456
https://support.plesk.com/hc/en-us/articles/360004061693-MSSQL-sa-user-keeps-getting-locked-Login-failed-for-user-sa-
https://github.com/Microsoft/mssql-docker/issues/301
https://loknathblog.wordpress.com/2010/09/29/login-failed-for-user-sa-sql-server-error-18456/
http://www.google.az/url?url=http://dbdesc.com/blog/login-failed-for-user-sa-4-things-to-check
https://community.ivanti.com/docs/DOC-42853
https://forums.tomsguide.com/threads/login-failed-for-user-sa.427687/