Mac User Guide
- Welcome
- What’s new in macOS Sequoia
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- Intro to Continuity
- Use AirDrop to send items to nearby devices
- Hand off tasks between devices
- Control your iPhone from your Mac
- Copy and paste between devices
- Stream video and audio with AirPlay
- Make and receive calls and text messages on your Mac
- Use your iPhone internet connection with your Mac
- Share your Wi-Fi password with another device
- Use iPhone as a webcam
- Insert sketches, photos and scans from iPhone or iPad
- Unlock your Mac with Apple Watch
- Use your iPad as a second display
- Use one keyboard and mouse to control Mac and iPad
- Sync music, books and more between devices
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- Control what you share
- Set up your Mac to be secure
- Allow apps to see the location of your Mac
- Use Private Browsing
- Keep your data safe
- Understand passwords
- Change weak or compromised passwords
- Keep your Apple Account secure
- Use Mail Privacy Protection
- Use Sign in with Apple for apps and websites
- Find a missing device
- Resources for your Mac
- Resources for your Apple devices
- Copyright
Use Wireless Diagnostics on your Mac
If you can connect to your Wi-Fi router but have issues loading web pages, sending or receiving email, or streaming music or video, use Wireless Diagnostics to analyse the network’s connection to the internet. After the analysis is complete, you get a list of detected issues and possible solutions, and information about Wi-Fi best practices.
Note: Wireless Diagnostics doesn’t change your network settings.
On your Mac, quit all open apps.
Try to join the Wi-Fi network you’re having problems with (if you’re not already connected).
Press and hold the Option key, click
in the menu bar, then choose Open Wireless Diagnostics.Follow the onscreen instructions to analyse your network connection.
After the analysis is complete, click the Info buttons
in the Summary pane to learn more about each item in the list.
Wireless Diagnostics also generates a compressed file that contains details that may be useful to your network administrator, service provider or IT support person.
The file is saved in the folder /var/tmp. The filename starts with WirelessDiagnostics and ends with .tar.gz.
To locate the file, click 
in the Dock, choose Go > Go to Folder, type /var/tmp, then press the Return key to open the folder that contains the diagnostics file.