Modifying this control will update this page automatically
Mac User Guide
- Welcome
- What’s new in macOS Sequoia
-
- Get started with Apple Intelligence
- Use Writing Tools
- Use Apple Intelligence in Mail
- Use Apple Intelligence in Messages
- Use Apple Intelligence with Siri
- Get webpage summaries
- Summarize an audio recording
- Create original images with Image Playground
- Use Apple Intelligence in Photos
- Summarize notifications and reduce interruptions
- Use ChatGPT with Apple Intelligence
- Apple Intelligence and privacy
- Block access to Apple Intelligence features
-
- 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
-
- 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
If another system tries to connect to an app on Mac
When another computer tries to connect to an app on your Mac over the network or internet, macOS displays an alert message. The app may be trying to allow other computers to connect with your Mac, or it may be sharing information with other computers.
Note: If no action is taken, the message remains displayed, and any attempts to connect to the app are denied.
On your Mac, do one of the following:
If this type of behavior is expected from this app, click Allow.
If you don’t expect the app to connect across the network, or if you don’t want to share information, click Deny. This blocks attempts by other systems to connect to the app.
Thanks for your feedback.