When launching certain programs downloaded from the Internet, Windows may display an error message stating: This app has been blocked for your protection. When such an error occurs, the user, even if they have local administrator privileges, will be unable to install or run the application. This problem may occur with third-party EXE and MSI files, and in some cases, with built-in Windows *.msc snap-ins launched via MMC.exe.
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
- Windows 10Windows 11Windows Server 2022
How to Unlock File or Folder Locked by SYSTEM or App Process
September 30, 2025Sometimes, when you try to delete, rename, or move a file or folder in Windows, you may receive a message saying the file is busy, locked, or in use by…
- Active DirectoryGroup PoliciesPowerShellWindows Server 2019
Configuring Password Policy in Active Directory Domain
March 12, 2024The password policy in an Active Directory domain specifies basic security requirements for user account passwords, such as password complexity, length, frequency of password changes, and so on. A strong…
- Windows 10Windows 11
How to Enable/Disable the Built-in Administrator Account in Windows
July 2, 2025When you perform a clean installation of Windows, the system prompts you to create a user account and automatically grants it local administrator privileges. However, Windows installation creates another built-in…
- Active DirectoryGroup PoliciesWindows 11Windows Server 2022
Mapping Network Drives (Shared Folders) via Group Policy
July 8, 2024Shared network folders from file servers can be made available to domain users as network drives using Group Policy. GPO allows configuring flexible rules to automatically map network drives based…
- ExchangePowerShell
How to Cleanup, Truncate or Move Log Files in Exchange Server 2013/2016/2019?
March 17, 2024After you deploy Exchange, you may notice that free disk space starts to decrease very quickly. In addition to the growth of the mailbox databases themselves, the various logs take…
- PowerShellWindows 10Windows 11Windows Server 2022
Invoke-Command: Run Commands or PowerShell Scripts on Remote Computers
May 15, 2025The Invoke-Command cmdlet allows you to execute commands or PowerShell scripts remotely on one or more remote computers
- Windows 10Windows Server 2019
Remote Session Disconnected: No Remote Desktop License Servers/Client Access Licenses Available
March 11, 2024In this article, we’ll look at several common issues related to RDS licensing, when RDP clients cannot connect to Windows Server with the Remote Desktop Services Host role installed. Licensing…
- Windows 10Windows 11Windows Server 2019
How to Enable Windows Auto Login without a Password
May 6, 2025A user must enter a password for a local or Microsoft (online) account each time they log on to Windows. This allows you to restrict access to your computer. In…
- Active DirectoryPowerShellWindows 10Windows 11Windows Server 2019
Repairing the Domain Trust Relationship Between Workstation and Active Directory
February 19, 2026If 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…