Safari problem

Hi,

If you can’t open Safari or a new Safari window, try these suggestions.

• Make sure you’re using the latest versions of Safari and macOS. To check for a Safari or a macOS update, choose Apple menu > App Store, then click Updates. For more information, see Keep your Mac up to date.
• Check your startup disk using Disk Utility.
• If the other suggestions don’t help, try reinstalling macOS.

If you can’t open a Safari window on Mac - Apple Support

Have you tried opening it from the Applications folder?

Try setting up another admin user account to see if the same problem continues. Please post back on whether or not this worked. Also try the Safe Mode. Please post back on whether or not this worked.

Isolating an issue by using another user account

Safe Mode - About

Safe Mode Startup – El Capitan. also Sierra

If it works in the Safe Mode, try running this program when booted normally and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor. Please use copy and paste as screen shots can be hard to read. Click “Share Report” button in the toolbar, select “Copy to Clipboard” and then paste into a reply. This will show what is running on your computer. No personal information is shown.

Etrecheck – System Information