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https://www.experts-exchange.com/questions/22930796/Login-failed-for-user-%27NT-AUTHORITY-SYSTEM%27-in-SQL-logs.html
https://support.symantec.com/en_US/article.TECH86621.html
https://help.octopus.com/t/windows-servier-start-login-failed-for-user-nt-authority-system/3595
https://support.memoq.com/index.php?/Knowledgebase/Article/View/266/13/sql-server-privileges-for-memoq-server-service-account
https://support.arcserve.com/s/article/202044599?language=en_US
https://wiki.scn.sap.com/wiki/display/SAPSQL/User+Login+Related+Issues
https://thwack.solarwinds.com/thread/118953