Attaching MDF and LDF files after a disaster failed with Msg 2571: user guest does not have permission to run DBCC checkprimaryfile. Here is the fix.
SQL SERVER – Fix Error 3271: A nonrecoverable I/O error occurred on file. The remote server returned an error: (404) Not Found
Error 3271 during backup to URL has many causes. After the 403 and 400 versions, here is what causes the (404) Not Found error and how to fix it.
SQL SERVER – Fix Error 3271: A nonrecoverable I/O error occurred on file. The remote server returned an error: (403) Forbidden
A reader’s backup to URL failed with Error 3271: the remote server returned an error: (403) Forbidden. Here is how I reproduced it and the easy fix.
SQL SERVER – Fix – Error – Property MemoryAllocatedToMemory OptimizedObjectsInKB is not available for Database. This property may not exist for this object, or may not be retrievable due to insufficient access rights.
The MemoryAllocatedToMemory OptimizedObjectsInKB error popped up while I was teaching a workshop. It is a permissions issue, and one command fixes it.
SQL SERVER – Authentication in SQL Server (Windows and Mixed Mode) – GDPR Series
Authentication in SQL Server identifies the caller through supported identity choices. My GDPR series considered those choices alongside access controls.
SQL SERVER – Historical SSMS Vulnerability Assessment and Current Availability
SQL Vulnerability Assessment was available in older SSMS releases. My walkthrough used SSMS 17.4 with SQL Server 2012 or later.
SQL SERVER – Account Added Automatically in SQL Server Used by SharePoint
A departed user’s account kept being added automatically to SharePoint database roles. How to catch who adds it, and from where, on SQL Server 2025.