How to

Set or change default programs in Windows 11/10 by file type, link type or app, from Settings or Open with. Covers reset, work PCs and defaults that revert.

Access the Microsoft 365 admin center at admin.microsoft.com with an admin work account. Sign-in steps, the Teams and Entra portals, roles and access-denied fixes.

TPM 2.0 and Secure Boot protect keys and the startup chain on Windows. Check both with tpm.msc, msinfo32 and Device security, then turn them on in UEFI.

Set up a Google Chromecast by plugging it into your TV, then using the Google Home app to add it to Wi-Fi. Steps for every model, testing, and fixes.

How to screenshot on Windows 11: press Windows + Shift + S, Windows + PrtScn or Alt + PrtScn. Where each capture is saved and fixes when screenshots fail.

The power button on Windows 11 is in the Start menu: select Start, then Power. Find it on the sign-in screen, Ctrl+Alt+Del, Win+X, Alt+F4 and the PC itself.

Access your USPS LiteBlue account at liteblue.usps.gov with your Employee ID and SSP password. Password and MFA resets, PostalEASE, ePayroll and phishing tips.

Reset Open with settings in Windows 10 by reassigning each file type in Open with or Settings > Default apps. Windows 11 differences, checks and fixes included.

Turn Windows Firewall on or off in Windows 11 and 10 with Windows Security, Control Panel, netsh, PowerShell or Group Policy, and why leaving it off is risky.

Use ipconfig /flushdns in an administrator Command Prompt to clear the Windows DNS cache. Exact syntax, PowerShell equivalent, how to verify, and error fixes.

Access Microsoft Access in Office 365 from the Start menu on a Windows PC. Plans that include it, how to install it, and fixes when Access is missing.

Open dxdiag on Windows 11 or 10 by pressing Win + R, typing dxdiag and pressing Enter. Read each tab, save a report, and fix DirectX problems it reveals.