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Posey Rose Author

Level 1

4 points

Safari will not open - error notice 303

What can I do to open Safari when I have error message 303

MacBook Pro 15″, macOS 10.15

Posted on Apr 19, 2021 6:37 PM

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Top-ranking reply

Level 10

83,964 points

Posted on Apr 20, 2021 3:13 AM

Clear all website data

https://support.apple.com/guide/safari/manage-cookies-and-website-data-sfri11471/mac

Enable Develop menu, click Develop in the menu bar and then Empty Caches from the dropdown twice.

https://support.apple.com/guide/safari/use-the-developer-tools-in-the-develop-menu-sfri20948/mac

Related: If Safari doesn't open a webpage or isn’t working as expected

https://support.apple.com/en-us/HT204098

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1 reply

Top-ranking reply

Level 10

83,964 points

Apr 20, 2021 3:13 AM in response to Posey Rose

Clear all website data

https://support.apple.com/guide/safari/manage-cookies-and-website-data-sfri11471/mac

Enable Develop menu, click Develop in the menu bar and then Empty Caches from the dropdown twice.

https://support.apple.com/guide/safari/use-the-developer-tools-in-the-develop-menu-sfri20948/mac

Related: If Safari doesn't open a webpage or isn’t working as expected

https://support.apple.com/en-us/HT204098

Reply

Safari will not open - error notice 303

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