Looking for logging into the Sharepoint Is From An Untrusted Domain 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 Sharepoint Is From An Untrusted Domain site. After that you can login as usual with your login credentials.
https://sharepoint.stackexchange.com/questions/110166/login-failed-the-login-is-from-an-untrusted-domain-and-cannot-be-used-with-wind
https://social.msdn.microsoft.com/Forums/officeocs/en-US/19418019-34b7-4bca-acd3-c8655cadc635/login-failed-the-login-is-from-an-untrusted-domain-and-cannot-be-used-with-windows-authentication?forum=sqlsecurity
https://social.technet.microsoft.com/Forums/en-US/f766111d-659d-4cbb-a7bd-ff8c65c980bf/login-failed-the-login-is-from-an-untrusted-domain-and-cannot-be-used-with-windows-authentication?forum=sharepointgeneralprevious
https://stackoverflow.com/questions/29942133/sharepoint-2010-central-admin-connection-failing-with-the-login-is-from-an-un
https://community.spiceworks.com/topic/847630-sharepoint-2010-sql-connection-issues
https://code.i-harness.com/en/q/1c8e175
https://wajahatabbas.wordpress.com/2010/12/06/untrusted-domain-sql-server-2008-r2-sharepoint/
https://serverfault.com/questions/674884/sql-server-windows-authentication-fails-after-tonights-security-updates-the-lo
http://aurramu.blogspot.com/2011/06/login-failedthe-login-is-from-untrusted.html
http://www.getsharepointsolutions.com/error-unknown-sql-exception-18452-occured-sharepoint-2013/
https://blog.sqlauthority.com/2017/04/18/sql-server-login-failed-login-untrusted-domain-cannot-used-windows-authentication/
http://blog.richardangus.com/2015/08/10/configuring-an-extranet-with-sharepoint-foundation-2013/
https://forums.asp.net/t/2039217.aspx?Login+failed+The+login+is+from+an+untrusted+domain+and+cannot+be+used+with+Windows+authentication+