How to

A 404 error means the server cannot find the page at that URL. Recover as a visitor, check the status with DevTools or curl, and fix 404s on your own site.

Find your Samsung account backup codes under Two-step verification on a Galaxy phone or account.samsung.com, then sign in with one when SMS codes fail.

How Apple AirTags work: a Bluetooth signal picked up by nearby Apple devices, Ultra Wideband for Precision Finding, Lost Mode, alerts and battery swaps.

Create an Amazon shopping list from Your Lists, share it with a view-only or edit link, and find a friend’s list or gift list. Steps, privacy settings and FAQ.

Delete a page in Word with Ctrl+G and \page, then remove blank pages caused by empty paragraphs, page breaks, section breaks or a table at the end.

Remove Yahoo search from Chrome by setting Google as the default search engine, then clear Yahoo from startup pages, extensions and policies so it stays gone.

MacBook Air vs. MacBook Pro compared on 30 specs from Apple: screens, M5 chips, memory, ports, external displays, battery, chargers, weight and US prices.

iPhone screen black? Force restart it first, then charge it for an hour. Fixes for Screen Curtain, overheating, liquid, Apple logo loops and when to get service.

Manage Apple devices with Microsoft Intune: set up the MDM push certificate, ADE token, enrollment, compliance, apps, updates and fixes for iPhone, iPad and Mac.

iPhone size chart with Apple’s official dimensions, weight and display size for every model from iPhone 12 mini to iPhone 18 Pro Max, iPhone Air and iPhone Duo.

Create an alias in Outlook from your Microsoft account for Outlook.com, or in the Microsoft 365 admin center, Exchange admin center or PowerShell for work mailboxes.

Legally download Office 2021, 2019 or 2016 free from Microsoft if you own a licence: sign in at account.microsoft.com, redeem a key, check support end dates.