In legacy Windows versions (Windows 7/XP or Windows Server 2008R2/2003) with Outlook 2010/2013/2016/2019, you may see the following error when trying to connect to a mail server:
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
- Azure and Microsoft 365ExchangePowerShell
Configure Auto-Reply (Out of Office) Message in Exchange and Microsoft 365
March 15, 2024An automatic reply feature (Auto-Reply, Out of Office Message/OOF) allows an Exchange user to configure a rule in their mailbox to automatically send a specific message in reply to all…
- PowerShellWindows 10Windows 11Windows Server 2019Windows Server 2022
How to Add/Remove Drivers to a Windows WIM/ISO Install Image
June 8, 2023You can simplify the deployment of the operating system on typical workstations (servers) if you add all the necessary drivers to the Drive Store of your Windows install image. In…
- Windows 10Windows 11Windows Server 2019
Configuring RDP/RDS Sessions Limits (Timeouts) on Windows
February 27, 2023When a user closes the RDP/RDS session window in a terminal client (mstsc.exe, RDCMan or Remote Desktop HTML5 web client) by simply clicking the cross in the top right corner…
- PowerShellWindows 10Windows Server 2019
How to Check Who Restarted (Shutdown) Windows Server
June 8, 2023If your company has several system administrators, sometimes you may want to know who rebooted the server. In this article. I will show you how to identify a user who…
- PowerShellWindows 10Windows 11Windows Server 2019
How to Find Duplicate Files Using PowerShell
June 8, 2023For one of the projects, I needed a PowerShell script to find duplicate files in the shared network folder of a file server. There are a number of third-party tools…
PostgreSQL is a free object-relational database management system able to compete with proprietary databases, like Microsoft SQL Server or Oracle. PostgreSQL supports user data, functions, operations, domains, and indexes. In…
A symbolic link (symlink) is a special file on a file system that doesn’t contain any data but is actually a shortcut pointing to another object (file or folder). When…
- Active DirectoryGroup PoliciesWindows 10Windows Server 2019
Configuring Windows Firewall Rules Using Group Policy
March 15, 2024The Microsoft Defender Firewall is built into all modern versions of Windows and Windows Server and allows you to configure rules for filtering incoming and/or outgoing network traffic on your…
- Microsoft OfficeWindows 10Windows 11
Fix: Signature Button Not Working in Outlook 2019/2016/365
March 11, 2024In different versions of Outlook (2019/2016/2013/Microsoft 365 Apps), a bug occurs periodically when the create signature button stops working. When the user clicks the Signature button in the Outlook settings,…