macOS Support & Troubleshooting Guide

Overview

Brandeis University supports specific versions of macOS to ensure that all devices integrated with university networks and systems remain secure. Keeping your operating system up to date ensures seamless compatibility with enterprise software such as GlobalProtect VPN and Microsoft 365.

Supported macOS Versions & Tiered Support

Brandeis generally operates on Apple's "n-2" cycle (supporting the current major release plus the previous two). The specific help desk support you receive depends on who owns the computer:

🏢 Brandeis-Owned Macs (Institutional Hardware)

  • Enrollment Requirement: Must be fully enrolled in JAMF Pro for automated security patching and university software deployment.

  • Software Support: Fully supported for all university-licensed applications.

  • Updates: ITS automatically manages and pushes mandatory security updates and OS upgrades via JAMF to maintain network compliance.

🎓 Student Personal Machines

  • OS Reinstallation Support: Help Desk staff can assist students with clean operating system reinstallations for supported versions (macOS 13 through macOS 16).

  • Prerequisites: Students must provide their own Apple ID credentials and ensure their machine has a working internet connection during service.

💼 Faculty & Staff Personal Machines

  • Support Policy: Supported on a best-effort basis only.

  • Boundaries: ITS does not perform physical hardware repairs or extensive, deep-level OS troubleshooting on personal, non-Brandeis equipment.

⚠️ Unsupported & End-of-Life (EOL) Systems

Any Mac running macOS 12 (Monterey) or earlier is classified as End-of-Life (EOL).

  • Security Risks: These versions no longer receive critical security or vulnerability patches from Apple.

  • Network Restriction: To safeguard university digital assets, EOL machines may be quarantined or completely blocked from accessing the Brandeis network.

  • Required Action: If your Mac cannot be upgraded to at least macOS 13 (Ventura), it must be replaced to ensure uninterrupted access to university resources.

🛠️ Troubleshooting Guide

1. Critical Pre-Requisites for Brandeis Computers

Before running any updates or executing system troubleshooting on an official Brandeis computer, verify it can contact university management servers:

  • On-Campus: Ensure you are actively connected to the Eduroam wireless network or a physical Ethernet connection.

  • Off-Campus: You must be connected to the secure GlobalProtect VPN.

  • Note: If an update is missing, it may still be undergoing evaluation and verification by ITS.

2. Resolving Post-Update Sluggishness or Battery Drain

If your Mac is running hot, lagging, or draining battery quickly right after a major update, follow these phases:

Step Diagnostic Action Explanation & Resolution
Step 1: The Indexing Phase

Leave the computer alone.

macOS runs heavy background processes (Spotlight indexing, Photos organization) post-update. Connect to a charger and let it sit idle for 30–60 minutes.
Step 2: Activity Monitor Check

Open Activity Monitor (Cmd + Space > type Activity Monitor). Go to the CPU tab and sort by % CPU.

Look for runaway apps. If a third-party app is permanently pinned above 90%, select it and click the "X" icon at the top to Force Quit. (Note: If mdworker or kernel_task are high, the system is still index-updating; let it finish).
Step 3: Disk First Aid

Open Disk Utility, highlight "Macintosh HD", and click First Aid.

This scans for minor file system integrity errors that occurred during extraction. If it reports errors it cannot fix, escalate the ticket to the Help Desk.

3. Application Failures & Crashes (e.g., Zoom, Research Tools)

If applications start crashing or acting erratically immediately following an update:

  1. Check for App Updates: Open the Mac App Store and check the Updates tab. For external apps, launch the application directly and use its internal menu to update (e.g., Zoom > Check for Updates).

  2. Safe Mode Diagnostic:

    • Apple Silicon (M1/M2/M3/M4): Shut down. Press and hold the Power Button until "Loading startup options" loads. Select your disk, hold down the Shift key, and click Continue in Safe Mode.

    • Intel Macs: Restart the computer and instantly hold the Shift key down until the login prompt window displays.

    • Result: If the application functions correctly while in Safe Mode, a third-party background extension or plugin is conflicting with the new update.

  3. Purge User Caches: Open Finder, press Cmd + Shift + G, paste ~/Library/Caches, and hit enter. Drag the files inside to the Trash and restart the computer to force apps to rebuild fresh temporary data files.

4. Hardware Disconnects (Wi-Fi, Bluetooth, Ports)

If your wireless connections or peripherals fail following a software change:

  • Clear Local Peripherals: Navigate to System Settings > Bluetooth, click the information icon next to your problematic device, select "Forget This Device", and re-pair it.

  • Reset Networks: For internet issues, delete the Eduroam profile entirely out of network settings and re-authenticate using your full university credentials (username@brandeis.edu).

  • Hardware Reset (Intel Macs Only): * NVRAM/PRAM: Shut down. Power on and immediately hold Option + Command + P + R for 20 seconds to clear hardware settings configurations.

    • SMC Reset: Shut down. On the built-in keyboard, press and hold Control + Option + Shift for 7 seconds, then add the Power Button for an additional 7 seconds. Release all keys and turn the Mac back on.

    • (Note: Apple Silicon Macs inherently run these checks and hardware resets automatically on a normal reboot cycle).

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