In this article, we will look at how to reduce the size of a virtual machine’s hard disk (VMDK) in VMware ESXi. From the vSphere Client GUI, you cannot reduce the size of a virtual disk (only the option to increase the VM disk size is available). An error occurs when you try to specify a smaller VM disk size: Enter a disk size which is larger than its original capacity.
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 2016Windows Server 2019Windows Server 2022
How to Run File Explorer Elevated (as Administrator) on Windows
March 7, 2024File Explorer process always runs with minimal (non-elevated) privileges in Windows. Even if you click the C:\Windows\explorer.exe executable file and try to start it in the ‘Run as administrator’ mode,…
- Windows 10Windows 11Windows Server 2019
How to Clean Up System Volume Information Folder on Windows
March 17, 2024Windows automatically creates a hidden System Volume Information directory in the root of each connected NTFS drive (whether a local HDD/SSD drive or a removable USB drive). The size of…
- Active DirectoryMicrosoft OfficePowerShell
Read and Write Excel (XLSX) Files with PowerShell
March 16, 2024You can access the data in an Excel file directly from within PowerShell. Although PowerShell has built-in cmdlets for importing (Import-CSV) and exporting (Export-CSV) tabular data from/to CSV files, the…
- Group PoliciesWindows 11Windows Server 2022
How to Disable NetBIOS, LLMNR, mDNS Protocols in Windows
March 20, 2025Broadcast protocols NetBIOS over TCP/IP, LLMNR, and mDNS (Multicast DNS) are used to resolve names in Windows networks where there is no (unavailable) DNS server (typically, these are home or…
- Active DirectoryGroup PoliciesWindows 10Windows 11Windows Server 2019
Auto Lock Computer Screen After Inactivity with GPO
March 15, 2024Information security best practices require the computer screen to be locked when the user is inactive (idle) for some time. A Windows user can lock the computer screen themselves (using…
- PowerShellWindows 11Windows Server 2022
How to Create and Manage Scheduled Tasks with PowerShell
September 5, 2025Rather than using the graphical Task Scheduler (taskschd.msc) snap-in or the legacy schtasks.exe console command, you can use PowerShell to manage scheduled tasks. This post will cover how to use…
- Windows 10Windows Server 2019Windows Server 2022
Hosting Multiple Websites in IIS with Same Port and IP Address
January 29, 2024When you install an IIS (Internet Information Services) web server on Windows, an empty “Default Web Site” is created, listening on the default HTTP port 80. In this article, we…
- Windows 10Windows 11Windows Server 2022
This App Has Been Blocked for Your Protection in Windows
July 21, 2025When 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,…
- 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…