Mac User Guide
- Welcome
- What’s new in macOS Sequoia
-
- 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
Resolve IP address conflicts on Mac
If you’re connected to a network using TCP/IP, and you are having problems connecting your Mac to other computers or services, there may be a conflict with your computer’s IP address and the IP address of another device on the network.
Depending on the way your IP address is provided, there are several things you can try to resolve the conflict.
If you receive an IP address automatically using DHCP, there could be another device on the network that is already using that IP address. In most cases, the DHCP server will provide your Mac with another IP address in a few minutes. Try connecting again.
Close the app that is using the connection (such as Safari or Messages), then open the app again.
Put your computer to sleep, wait a few minutes, then wake it from sleep. Try connecting again.
Close all open apps and restart your computer.
If you entered your IP address manually, make sure you entered the correct address. If you’re connecting to a network that’s managed by an administrator, check with the administrator. See Enter TCP/IP settings.
If you’re on a home network and none of these suggestions fix the problem, try disconnecting from the network and turning off all the devices that are connected to it (for example, your router and modem). Wait a few minutes, then turn the devices back on. See Restart an external device.