The Disk Cleanup tool allows the administrator to quickly clean up the Windows Server system drive by deleting unnecessary and temporary files, including cleaning the WinSxS directory from files of outdated components that remained after installing the latest cumulative updates. The Disk Cleanup utility (cleanmgr.exe) is installed by default on the GUI editions of Windows Server 2016/2019 (Desktop Experience). However, in previous versions of Windows Server (2012 R2/2012/2008 R2), the cleanmgr.exe tool is missing.
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
- Active DirectoryPowerShell
How to Change Computer Object Attributes in Active Directory
March 12, 2024A separate account of type Computer is created for a computer when you join it to an Active Directory domain. A computer object in AD has several mandatory attributes: sAMAccountName,…
- Group PoliciesPowerShellWindows 10Windows 11
How to Block Unwanted Websites in Windows
September 16, 2025This post explains several methods for blocking access to specific websites, domains, URLs, or IP addresses on a Windows computer without using third-party tools. The most effective way to block…
- Windows 10Windows Server 2016
Fixing Volume Shadow Copy (VSS) Error with Event ID 8193
February 5, 2020The monitoring system on one of my servers running Windows Server 2016 started sending multiple messages of the Volume Shadow Copy Service error with the Event ID 8193 and VSS…
When creating new user accounts in Active Directory, an administrator sets a unique initial password for each account and tells it to a user (usually at the first logon a…
From time to time in the vSphere Client interface I come across the notification: Your password will expire in xx days. I decided to learn how to manage password policies…
- PowerShellWindows 10Windows 11Windows Server 2019
Fix: DNS Resolution over VPN Doesn’t Work on Windows
December 27, 2023Force Tunnel mode is enabled by default for all VPN connections in Windows (the ‘Use default gateway on remote network‘ option enabled in the VPN settings). In this mode, name…
- Windows 10Windows Server 2016
Using PortQry to Check TCP/UDP Open Ports (Port Scanner)
March 17, 2024Windows has many tools for diagnosing problems in TCP/IP networks (ping, telnet, pathping, etc.). But not all of them allow you to conveniently check the status or scan opened network…
Users often complain that Outlook doesn’t display (download) attached or linked images in the email body. Instead of images/photos, red X crosses are shown in the email. In this article,…
- Windows 11Windows Server 2019Windows Server 2022
Installing Free Let’s Encrypt TLS(SSL) Certificates on Windows Server
October 4, 2024This guide explains how to install free Let’s Encrypt TLS/SSL on a Windows host. We’ll cover how to issue, bind, and renew a certificate for an IIS website, and how…