Login failed, untrusted domain, error 18452, and a cluster that would not fail over. The cause was an SPN. How to read the SPN messages.
SQL SERVER – FIX: Msg 15150 – Cannot Alter The User ‘dbo’.
Deploying SharePoint, a client tried to change the dbo mapping and got Msg 15150: Cannot alter the user ‘dbo’. Here is why it happens and how to fix it.
SQL SERVER – AlwaysOn Availability Groups: Script to Sync Logins Between Replicas?
A script to sync logins between availability group replicas, keeping the SID so users do not orphan on failover. What to copy and what to check after.
How to Enforce Password Policy of Windows to SQL Server? – Interview Question of the Week #142
SQL Server logins follow Windows password rules by default. If a login has it turned off, here is a simple script to Enforce Password Policy again.
SQL SERVER – Login Failed – Error: 18456, Severity: 14, State: 38 – Reason: Failed to Open the Explicitly Specified Database
Error 18456 State 38: failed to open the explicitly specified database. The login worked and the database did not. The four usual causes.
EXECUTE AS LOGIN vs EXECUTE AS USER: Where Impersonation Stops
Your test passed as a user, yet the sales team still gets an error. Here is where each kind of impersonation stops, and how to get back out.
SQL SERVER – FIX: Msg 15170, Level 16, This login is the Owner of 1 Job(s). You Must Delete or Reassign these Jobs Before the Login can be Dropped
Msg 15170: this login is the owner of 1 job(s) and cannot be dropped. Here is how to find those jobs and reassign them first.