Login failed. The login is from an untrusted domain and cannot be used with Windows authentication. Here is how the ERRORLOG led me to the cause.
SQL SERVER – Logon Failure: The User has not Been Granted the Requested Logon Type at This Computer
SQL Server will not start: the user has not been granted the requested logon type. No ERRORLOG, because Windows refused. Also error state 10013.
How to Change Owner of Database in SQL SERVER? – Interview Question of the Week #117
How do you change owner of a database in SQL Server? Three ways, including ALTER AUTHORIZATION, which I prefer, and the deprecated sp_changedbowner.
SQL SERVER – FIX – Error 1402. Could not open key: UNKNOWN\Components. System error 5
Installing a SQL Server service pack failed with Error 1402. Could not open key: UNKNOWN\Components. System error 5. Here is the fix.
SQL SERVER – Query to Get the List of Logins Having System Admin (sysadmin) Permission
Many scripts online miss logins when listing sysadmin members. Why the common query is wrong, plus a correct one for logins with System Admin permission.
SQL SERVER – TDE Effects on TempDB’s Slow Performance
A client had slow performance out of nowhere. The cause was TDE effects on TempDB after someone tested encryption on production. Here is what I learned.
Why an Encrypted Column Shows NULL on a Subscriber
An encrypted column shows NULL on a subscriber when the subscriber’s symmetric key doesn’t match the publisher’s key. This post reproduces the symptom with two demo databases, compares key_guid in both and shows the fix. It also explains what replication copies and what it leaves behind.