safari can't open a secure

1. Make sure Date and Date is set  to automatically.

    If already checked, uncheck and recheck it.

https://support.apple.com/en-us/HT203413

    https://support.apple.com/guide/mac-help/set-the-date-and-time-mchlp2996/mac

2. Do you have any anti-virus software installed on your computer?

3 If Safari says it can't establish a secure connection, or the website is using weak encryption

https://support.apple.com/en-us/HT204937

Hey there,

I had this same issue today and I have figured out a solution. Simply head to System Preferences > Network > Advanced > Proxies then unselect any proxies that are checked. After this relaunch Safari and it should work.