Flamingo Blog.

A domain controller is the Windows Server that verifies sign-ins and holds a replicated copy of Active Directory. This guide covers what it stores, the five FSMO roles, how many you need, how to back one up safely and when a cloud-only setup can replace it.

How to design an IT naming convention: the 15-character Windows limit, serial-, counter- and role-based patterns, what never to put in a name, account naming, and how to enforce and audit names.

How to map a network drive on Windows 11 from File Explorer, net use, New-SmbMapping and a Group Policy Preferences Drive Map, why the letter is missing when the mapping worked, and the four SMB settings in 24H2 that refuse a connection.

How to remove a Microsoft account from Windows 11 the technician way: copy the BitLocker recovery key first, switch the sign-in to a local account or remove another user's account, handle Entra joined devices differently, and set the Group Policy or Intune policy that keeps personal accounts off company PCs.