Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteIf Wi-Fi, Bluetooth, or battery behavior changed after a macOS update, start by identifying the exact symptom and checking whether it affects one network or device—or the Mac more broadly. The timing alone does not prove the update caused the problem. Record your Mac model, macOS version, and whether it uses Apple silicon or an Intel processor before trying model-specific steps.
Start by identifying the symptom
“Not working” can mean several different things, and each calls for a different check. Note which description fits, along with any error message:
- The Mac cannot see a Wi-Fi network or cannot join it.
- The Mac joins Wi-Fi, but websites or other internet services do not work.
- A Bluetooth device is missing, disconnects, or behaves erratically.
- Battery charge falls faster than expected.
- The Mac does not charge, or charging stops intermittently.
Where practical, test another Wi-Fi network, Bluetooth device, or compatible power adapter. Whether the issue follows the Mac or stays with one network, device, or accessory helps narrow the cause.
Fix Wi-Fi that will not connect—or connects without internet
Check whether the problem is the Mac or the internet connection
- Make sure Wi-Fi is on and the Mac is connected to the intended network.
- If Wi-Fi shows as connected but internet services fail, test another device on the same network. If that device also cannot get online, check the router and internet service rather than assuming the Mac is at fault.
- Restart the Mac and confirm its date and time are correct. If you use a VPN or other network-security software, check whether it is interfering with access.
- If you manage the router, check its manufacturer’s firmware guidance and recommended settings. Apple’s Wi-Fi troubleshooting guide has further steps for a Mac that cannot connect to the internet over Wi-Fi: If your Mac isn’t connecting to the internet over Wi-Fi.
Use the Mac’s Wi-Fi tools
If macOS offers a Wi-Fi Recommendation, review it. Recommendations are not available for enterprise networks or personal hotspots. For a network already set up on the Mac, press and hold Option while clicking the Wi-Fi menu, then choose Open Wireless Diagnostics. Wireless Diagnostics analyzes the connection and reports detected issues and possible solutions; it does not change network settings. See Apple’s Wireless Diagnostics guide.
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Compare with another network
Try connecting to a different Wi-Fi network. If the Mac works there, investigate the original network, router, or internet service. If it fails across networks, continue with Mac-side troubleshooting and contact Apple Support if the problem persists. Avoid starting with destructive network-configuration changes or Terminal commands; the basic checks and Apple’s diagnostic tools are safer first steps.
Check Bluetooth dropouts and wireless interference
Open System Settings > Bluetooth and check that Bluetooth is on. Review My Devices and Nearby Devices to see whether the device appears. Move the Mac and accessory closer together, then test again.
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Wi-Fi and Bluetooth can both be affected by interference, particularly in the 2.4 GHz band. Apple lists Wi-Fi dropouts or slow connections, interruptions in Bluetooth audio, and erratic pointer movement among possible symptoms. To isolate interference:
- Temporarily move suspected sources of interference away from the Mac and Bluetooth device.
- Disconnect USB 3 or Thunderbolt 3 hubs and drives, or move them farther away, and see whether behavior changes.
- If your router supports 5 GHz, move Wi-Fi devices that can use it to that band to reduce competition in 2.4 GHz.
- Reduce the number of devices actively using 2.4 GHz and check the router’s channel settings.
These are diagnostic steps, not proof that an update did—or did not—cause the issue. Apple’s guidance on Wi-Fi and Bluetooth issues caused by wireless interference provides more detail. If a Bluetooth device still disconnects, record whether other Bluetooth devices behave the same way; there is no single reset sequence established here as a guaranteed fix for all post-update cases.
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Troubleshoot a MacBook battery that drains quickly
Fast discharge is different from a Mac that refuses to charge. For discharge, check the battery and what the Mac is doing before changing hardware or settings.
- Check battery condition in Battery settings and review energy settings, including Low Power Mode and display and sleep settings.
- Quit apps you are not using. Use Activity Monitor to investigate processes that continue using significant resources in the background.
- Disconnect accessories you do not need and see whether battery use changes.
- Consider Spotlight indexing if the change followed a software update or upgrade. Apple says Spotlight updates its index after an update or upgrade; depending on the amount of data, indexing can take hours or even days. Keep the Mac connected to power and idle when practical while it proceeds. That duration applies to indexing, not a promised time for battery life to return to normal.
Apple’s guides explain how to address a Mac battery that runs out of charge quickly and save energy on your Mac. If battery condition indicates a service issue or the drain continues after checking apps and settings, contact Apple Support.
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Fix a Mac battery that will not charge
Check the power path first, then consider temperature, workload, software, and hardware.
- Check that the cable, adapter, charging port, AC connection, and wall outlet are secure. Look for visible damage; stop using damaged charging equipment.
- Review Battery settings and battery condition. Reduce unusually heavy workloads while testing.
- Let the Mac cool in a well-ventilated area if it is hot. Apple’s stated ambient operating range for charging is 10–35 °C (50–95 °F).
- Restart an Apple silicon Mac if software or power management may be involved. On other Mac computers, an SMC reset may be relevant, but use instructions that match the exact model.
- Run Apple Diagnostics if you suspect a hardware component. If charging still fails, contact Apple or an Apple Authorised Service Provider.
Apple’s Mac charging troubleshooting guide covers these checks. Do not use an SMC reset procedure intended for a different Mac model.
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What to record before contacting support
Useful details help distinguish a network, accessory, software, or hardware problem. Note:
- Mac model, macOS version, and whether it is Apple silicon or Intel.
- The precise symptom and when it occurs, including any error messages.
- Which networks or Bluetooth devices you tested and whether the problem follows the Mac.
- Battery condition, charging equipment used, and the results of any built-in diagnostics.
For persistent Wi-Fi or Bluetooth problems, or charging and battery concerns that suggest hardware trouble, share those observations with Apple Support or an Apple Authorised Service Provider.
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