If a trust relationship between a Windows workstation and an Active Directory domain is broken, the computer won’t be able to establish a secure channel with the domain controller, and domain users will not be able to authenticate to that computer. In this article, we will look at the root causes of why Windows machines can fall off the AD domain and a simple way to restore a trust relationship between a computer and a domain without reboot.
Windows Server: Administration Guides
Step-by-step tutorials and comprehensive courses covering Windows Server installation, configuration, administration, and management. Learn to deploy server roles, manage Active Directory, configure networking, automate tasks with PowerShell, and implement security best practices for Windows Server 2012, 2016, 2019, and 2022 editions. Ideal for beginners and IT professionals seeking practical, hands-on knowledge to master Windows Server environments.
Windows 10 and 11 Tutorials for System Administrators
Guides and technical tutorials for system administrators, focusing on the configuration, deployment, and management of Windows 10 and Windows 11 desktop operating systems. Step-by-step instructions on installation, deployment, policy configuration, security hardening, and administrative tools to optimize Windows enterprise environments.
Group Policy (GPO) Guides for Admins
Clear, concise tutorials on creating and managing Group Policy Objects to control user and computer settings, enforce security, and streamline network administration in Active Directory environments.
- Configuring Firewall Rules With Group Policy
- How to Copy Files or Folders to All Computers with GPO
- Updating Group Policy Administrative Templates (ADMX) Files
- Active Directory Password Policy
- Applying Group Policy troubleshooting guidance
- Deploying printers via GPO
- Running PowerShell scripts using Group Policy
- Local Groups Policies export and import on Windows
Active Directory: Setup, Configuration, and Best Practices
Step-by-step tutorials and comprehensive resources for installing, configuring, and managing Active Directory Domain Services (AD DS). Learn how to set up domain controllers, design forest and domain structures, create users and groups, and implement security best practices.
- Updating AD Group Membership Without Restart or Logoff
- How to Detect the Source of Account Lockout in Active Directory
- Adding an Additional Domain Controller To an Existing AD Domain
- Active Directory Health Check
- Get-ADDomainController: How to Get Domain Controller Information with Powershell
- How to Transfer os Seize FSMO Roles in Active Directory
- Active Directory Backup Best Practices
- How to Reset Domain Admin Password in Active Directory
- Fix Trust Relationship Failed Issue without Domain Rejoining
- How to Extend Password Expire Date in Active Directory
- How to Find Inactive Accounts in Active Directory
Enterprise Virtualization Platforms
Expert guides and tutorials for system administrators on VMware, Hyper-V, and Proxmox virtualization. Covering installation, configuration, management, and optimization to build robust and scalable virtual environments.
PowerShell Scripting Tutorials
Practical guides to automate and manage a wide range of IT tasks using PowerShell. Learn how to streamline system administration, Active Directory, network configuration, software deployment, Microsoft 365 management, and more through powerful scripting and cmdlets.
VMware:Install and Configure Guides
Detailed walkthroughs for installing VMware ESXi, vCenter Server, and VMware Workstation Player, including configuration of virtual machines, network settings, and storage options to optimize your virtual infrastructure.
- VMware ESXi: Create VMFS Datastore on USB Drives
- Configuring iSCSI Datastore on VMware ESXi
- Add Drivers into VMWare ESXi Installation Image
- Adding Sound Controller to a VMWare VM
- Using Free VMware vSphere Hypervisor
- Adding an ESXi host to the VMware vCenter (vCSA)
- Reset VMware ESXi root password
- Disable the Virtual Machine Auto Suspend Feature in VMware Workstation/Player
- PowerShellWindows 10Windows 11Windows Server 2022
Enabling DNS over HTTPS (DoH) on Windows 11
November 6, 2024The latest versions of Windows support the DNS over HTTPS (DoH) protocol, which allows domain name resolution (DNS queries) to be performed over an encrypted HTTPS connection. In this article,…
- PowerShellWindows 10Windows 11
How to Uninstall Built-in UWP (APPX) Apps on Windows 10 or 11
June 6, 2024Windows 10 and 11 ships with a set of pre-installed Microsoft Store applications (UWP/APPX apps). These are Calculator, Calendar, Mail, Cortana, Maps, News, OneNote, Groove Music, Camera, etc. These apps…
- Active DirectoryWindows Server 2016
Creating a Keytab File for Kerberos Authentication in Active Directory
March 13, 2024Many Linux services (apache, nginx, etc.) can use keytab files for Kerberos authentication in Active Directory without entering a password. The keytab file keeps the names of Kerberos principals and…
- Windows 10Windows 11Windows Server 2022
How to Repair (Rebuild) the WMI Repository on Windows
March 12, 2025Every experienced Windows administrator has encountered with problems with the Windows Management Instrumentation (WMI) service and its components. WMI is an important subsystem of Windows, and if it malfunctions, the…
Sometimes it is necessary to connect an external USB storage drive (flash drive) directly to a VMware ESXi host. This might be necessary for offline transfer of virtual machine files…
- PowerShellWindows 10Windows 11Windows Server 2022
How to Sign a PowerShell Script File (PS1)
May 23, 2024The digital signature of a PowerShell script (*.PS1 file) allows you to verify that a known trusted publisher signs the script and that its code has not been modified. The…
- Windows 10Windows Server 2016Windows Server 2019
How to Shadow (Remote Control) a User’s RDP session on Windows Server RDS
March 17, 2024Shadow session mode allows RDS administrators to view and interact with the user’s desktop. Remote Desktop Shadowing mode works on all modern versions of Windows starting from Windows Server 2012…
- Active DirectoryGroup PoliciesWindows 10Windows Server 2016
Configuring Proxy Settings on Windows Using Group Policy Preferences
February 27, 2023In this article, we’ll take a look at how to centrally configure proxy settings on Windows 10 computers in a domain using Group Policy. Most popular browsers (such as Microsoft…
- Active DirectoryGroup PoliciesPowerShellWindows 10Windows Server 2022
How to Refresh (Update) Group Policy Settings on Windows
August 13, 2024To apply new local or domain Group Policy (GPO) settings to a Windows computer, the Group Policy Client (gpsvc) service must read the policy files and apply the setting to…