Some MacOS Sequoia users have discovered various networking issues with their Mac since installing the MacOS Sequoia 15 system software update.
If you’re experiencing problems with network connectivity, internet connections, wi-fi, messaging, VPN connections, firewalls, anti-virus or anti-malware apps, or other network connection issues, read along to troubleshoot and resolve these problems.
Install available software updates - any known bug or network issue will be addressed by Apple and patched with a software update.
If you use third party security software, make sure you install any available updates to those apps as well.
Set the private wi-fi address feature to ‘fixed’ in settings.
Disabling third party network filtering apps and firewalls can resolve some network issues with MacOS Sequoia.
Manually trash the network settings of MacOS, then reconfigure networking and set it up again to resolve network problems.
Disable VPNs to send messages when macOS Sequoia doesn't allow sending RCS messages from the Mac.
Resolving issues with MacOS Sequoia is usually fairly straightforward.
Share your experiences and resolutions in the comments.