macOS

This guide explains Apple Music’s “This computer is not authorized” message when a Mac cannot play or download purchased music. It covers verifying the purchase account, authorizing the Mac, safely freeing an authorization slot, using Deauthorize All, and handling repeated prompts that require support.

This guide addresses the Photos for Mac “Unable to Upload” and “Couldn’t Sync” item-level iCloud errors. It explains how to locate affected media, export and verify unmodified originals before permanent deletion, reimport them, understand the risk to edits and keywords, and stop safely if an original cannot be recovered.

This guide explains the Mac alert “Your computer was restarted because of a problem” after an unexpected restart or shutdown. Follow Apple-supported updates, Safe Mode testing, peripheral isolation, Apple Diagnostics, and a later non-erasing reinstall path without treating the alert as proof of one cause.

This guide explains Disk Utility’s “First Aid process has failed” report on Mac. It covers backup-first precautions, Apple’s volume-to-device repair order, startup-disk repair in macOS Recovery, external storage decisions, and the conditions for erasing, replacing the disk, or seeking service.

This guide explains Finder error code -36, which appears when macOS cannot read or write some data during a file operation. It separates internal, external, removable, and network-storage contexts, shows Apple’s correct Disk Utility First Aid order, and explains when to back up, stop repairs, reformat, replace, or seek service.

This guide explains why macOS Gatekeeper says Apple cannot check a downloaded app, installer, or plug-in for malicious software. It covers obtaining a trusted notarized copy, contacting the developer, and using Apple’s per-item Open Anyway option only after verifying the file and its source.

This guide explains the Mac warnings “USB Accessories Disabled” and “USB Devices Disabled” on Apple silicon and Intel Macs. It covers Apple’s power-specific checks: reconnecting the accessory, changing ports, bypassing hubs or docks, supplying AC power, checking equipment requirements and escalating persistent warning or charging cases.

This diagnostic guide resolves the exact Mac message “Failed to personalize the software update. Please try again.” It covers macOS Software Update and Recovery, progressing from storage and internet checks through First Aid, installer redownload, non-erasing firmware revive, and destructive restore only when earlier steps fail.