Troubleshooting - Blog | macOS Tahoe

Solutions and fixes for common macOS issues. Find answers to problems with apps, system performance, connectivity, and more.

• Printer Software Not Compatible on macOS 27? Brother and HP Fixes
  macOS 27 says the printer software is not compatible? What is documented, what is only reported, and a printer-first fix path: AirPrint, Rosetta, drivers.
• dasd and appstoreagent High CPU Overnight on macOS 27: Fix
  Mac hot, fans loud, battery drained by morning on macOS 27? Confirm the dasd and appstoreagent loop, apply the community fix, and rule out other causes.
• Mission Control Broken in macOS 27? Black Screens, Lost Spaces, Fixes
  macOS 27 Mission Control bugs: black screens after moving a desktop, full-screen apps that will not switch, missing thumbnails. Workarounds and fix timing.
• macOS 27 Ignores “Open Using Rosetta”: Fix Missing Intel Plug-ins
  macOS 27 removes Rosetta on upgrade and ignores Open using Rosetta. Find the Intel plug-ins, printer filters and installers that break, and fix them.
• macOS 27 Not Showing in Software Update? Here Is Why, in Order
  macOS 27 Golden Gate is out but your Mac only offers 26.7. Eligibility, staged rollout, MDM deferrals, beta channels and how to fetch the installer directly.
• peopled Pinning Your Mac's CPU on macOS Tahoe? It Is Usually the Contacts Widget
  peopled or contactsd stuck at 70–180% CPU after a Tahoe update, Mac hot and battery draining? The cause is a Contacts widget that cannot read your call history. Here is the fix that works.
• Mac Disk Full With Nothing on It? Check Root's Log Folder
  Storage tools miss tens of gigabytes hidden in /private/var/root. Here is how to find runaway RTCReporting logs, and the sync bug that usually causes them.
• Apple Mail's Exchange Accounts Break in October 2026
  Microsoft disables Exchange Web Services from October 2026 and macOS Mail still depends on it. Here is the timeline, who is affected, and what to do now.
• When a macOS Update Goes Wrong: The Tahoe Recovery Playbook
  A macOS update went wrong and your Mac won't boot. Here is the ordered Tahoe recovery playbook: sealed snapshots, Recovery Assistant, DFU, and what erases data.
• Your Mac Blocked a Terminal Paste: What the Alert Means
  macOS can block a command you paste into Terminal. Here is what each alert means, why it appeared, when it is safe to override, and what it does not protect.
• Phone App on Mac Not Ringing or Calls Failing on macOS Tahoe? Fix It
  Calls not ringing on your Mac, or the Phone app says Call Failed? Fix the iPhone toggle, Wi-Fi, firewall, notification, and VPN causes step by step.
• Mac Hot and Draining Battery After macOS 26.6? Here Is Why
  Mac running hot with loud fans and battery drain after updating to macOS 26.6? It is rebuilding the Spotlight index. Here is how to tell, and when to worry.