Safari won't run on my iMac

You typically get the cannot find server error when you lose your wifi connection. Try checking your email to see if you have connectivity there. You may want to restart your router and wait for it to come up, then restart your computer and test again.

1. Restart your mac
2. Check your internet connexion
3. Remove and re-add your WiFi network
4. Clear cache and cookies (Safari > Settings... > Privacy > Manage Website Data > Remove All)
5. Disable content blockers
6. Disable VPN
7. Turn off iCloud Private Relay and disable IP Address Tracking in Safari Settings
8. Look if Firewall or Antivirus software is blocking something