papanda925

Security

September 2026 Windows Security Updates: Checking Your PC's KB and OS Build

A step-by-step guide to checking your PC for the Microsoft monthly security updates released on September 8, 2026, using PowerShell and the Windows Update history.
2026.09.14
Security
Networking / RFC

Checking Public DNS Information with PowerShell

Observe public DNS information in read-only mode using PowerShell.
2026.09.14
Networking / RFC
PowerShell

Checking the Clipboard Locally with PowerShell + WPF: Inspecting State Without Saving Content

We explore an approach using the WPF Clipboard API to monitor character counts without saving content, building a confirmation UI to reduce accidental paste errors.
2026.09.14
PowerShell
PowerShell

Things to Know Before Handling Windows Notifications with PowerShell

Before using Windows message display features from PowerShell, we examine the execution environment and API boundaries.
2026.09.14
PowerShell
Networking / RFC

Observing ETag and 304 with curl: Verifying HTTP Caching Hands-On

Send ETag and If-None-Match using curl, and observe HTTP conditional requests through the difference between 200 and 304.
2026.09.14
Networking / RFC
Linux / CLI / DevOps

Comparing JSON Configurations with jq: Normalizing Key Order to Make Diffs Easier to Read

Learn how to use jq -S to normalize JSON key order before running diff, allowing you to focus on the actual configuration changes.
2026.09.14
Linux / CLI / DevOps
VBA / Office

Breaking down long formulas with the Excel LET function: How to verify intermediate results step by step

Try using the LET function to assign names to intermediate results and verify long Excel formulas one step at a time.
2026.09.14
VBA / Office
Microsoft 365 / Azure

How to Choose Between Microsoft 365 Copilot Chat and Copilot Business: Comparing the Free Tier and Paid Version for Business Operations

Compare Copilot Chat and Copilot Business not only by price, but also from the perspectives of in-app Office usage, business data integration, and role-based piloting.
2026.09.14
Microsoft 365 / Azure
IT News

Excel's =COPILOT function to be retired on September 14, 2026 — What to check right now

Based on official Microsoft announcements, we outline what to check in existing workbooks and how to evaluate alternatives before the Excel =COPILOT function is retired on September 14, 2026.
2026.09.13
IT News
Networking / RFC

Observing TCP States with PowerShell: What Do ESTABLISHED and TIME_WAIT Mean?

Use Get-NetTCPConnection to passively observe ESTABLISHED and TIME_WAIT states, bridging RFC 9293 TCP state transitions to practical troubleshooting.
2026.09.13
Networking / RFC
Next page