Author: IT Expert

Christian, Microsoft MVP, Veeam Vanguard & Legend (2021–2026), VMware vExpert, and Cisco Champion, shares expert guides, how-to tutorials, troubleshooting insights, and technical tips across Windows, Linux, Mac, databases, cloud, networking, hardware, and information security.

Windows 2016 Servers do not show up on the WSUS console

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Windows 2016 Servers do not show up on the WSUS console

Windows Server Update Services (WSUS): WSUS previously known as Software Update Services (SUS), is a computer program and network service developed by Microsoft Corporation that enables administrators to manage the distribution of updates and hotfixes released for Microsoft products to computers in a corporate environment. Please see How to disable unused Cisco Access Ports, Windows…

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Windows Server

How to upgrade Apache Tomcat from One Version to another

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How to upgrade Apache Tomcat from One Version to another

In this guide, we shall discuss how to upgrade Apache Tomcat from One Version to another. Apache Tomcat is an open-source implementation of the Java Servlet, JavaServer Pages, Java Expression Language and WebSocket technologies. Please, see Copying TFTP Image to Flash, Hacker Thinking in Ransomware Attacks: Backup Is the real Target, and Bypassing BitLocker Loop…

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Web Server

Git GUI and Gitk won’t open “Missing Tcl / Tk Aqua libraries”

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Git GUI and Gitk won’t open “Missing Tcl / Tk Aqua libraries”

Most Unix / Linux operating system distributions, as well as Mac include Tcl/Tk. If not already installed, you can use your system’s package manager to install the appropriate packages. In this article, we will learn how to fix “Git GUI and Gitk won’t open “Missing Tcl / Tk Aqua libraries””. Please see How to Fix Taskbar…

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Version Control System

How to uninstall Git from MacOS

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How to uninstall Git from MacOS

Git is a free and open-source distributed version control system designed to handle small to very large projects with speed and efficiency. Git is relatively very easy to learn and has a tiny footprint with lightning-fast performance. It helps in tracking changes in source code during software development. Designed for coordinating work among programmers. But it can also…

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Mac, Version Control System

How to install Git on macOS

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How to install Git on macOS

Git is a version control system that allows developers to track a project and actively contribute without interfering in each other’s work. It supports collaboration within a project and helps prevent miscommunication or code clashing between team members. Git is a very supported open source project and the project maintainers have shown balanced judgment and a…

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Version Control System

Error importing OVA file to AWS: Client error saved empty is empty

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Error importing OVA file to AWS: Client error saved empty is empty

An OVA file is an Open Virtualization Appliance that contains a compressed, “installable” version of a virtual machine. When you open an OVA file it extracts the VM and imports it into whatever virtualization software you have installed on your computer. In this article, we shall discuss “Error importing OVA file to AWS: Client error saved empty is empty”….

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AWS/Azure/OpenShift

How to query, stop and delete a service in Windows

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How to query, stop and delete a service in Windows

Services in the Windows OS are background processes that usually require no user interaction and is similar to a UNIX daemon process. Services provide core operating system features, such as Web serving, event logging, file serving, printing, cryptography, and error reporting. In this article, we will discuss how to query or stop and delete a…

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Windows

How to stop Windows from applying updates

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How to stop Windows from applying updates

When faced with the situation to prevent Windows from downloading updates when you need to avoid restarting your PC or applying updates because the server is currently in use (in production), you can take specific actions to delay (stop) or pause updates. In tis article, you will learn How to stop Windows from applying updates….

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Windows

View Scheduled Events on AW using AWS Web Console and CLI

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View Scheduled Events on AW using AWS Web Console and CLI

In this article, you will learn how to View Scheduled Events on AW using AWS Web Console and CLI. AWS can schedule events for your instances such as a reboot, stop/start, or retirement. Please see How to find out who restarted Windows Server, the Various methods to launch the Event Viewer, and “How to detect…

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AWS/Azure/OpenShift

Import Virtual Machines to AWS as AMI

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Import Virtual Machines to AWS as AMI

An Amazon Machine Image (AMI) is a template that contains a software configuration (for example, an operating system, an application server, and applications). From an AMI, you launch an instance, which is a copy of the AMI running as a virtual server in the cloud. You can launch multiple instances of an AMI. You can launch different types…

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AWS/Azure/OpenShift

Office Configuration Analyser Tool (OFFCAT): Now Microsoft Support and Recovery Wizard

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Office Configuration Analyser Tool (OFFCAT): Now Microsoft Support and Recovery Wizard

Depreciated – Offcat Office Configuration Analyzer Tool (OffCAT): OffCAT provides a detailed report of your installed Office programs, including parameters about your Office program configuration. It highlights known problems found during the scan. This article discusses ‘Office Configuration Analyser Tool (OFFCAT) – Now Microsoft Support and Recovery Wizard”. Please see how to Upgrade Microsoft Office…

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Microsoft Exchange/Office/365

Install Git on Windows: Practical Git use with markdown

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Install Git on Windows: Practical Git use with markdown

Git is a free and open-source distributed version control system designed to handle everything from small to very large projects with speed and efficiency. Git is easy to learn and has a tiny footprint with lightning-fast performance. It outclasses SCM tools like Subversion, CVS, Perforce, and ClearCase with features like cheap local branching, convenient staging areas,…

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Version Control System