I am not able to see SameSite=Strict using builtin developer tools in the “Application” tab.
I have added below Header code in Apache configuration
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For apache2 >= 2.2.4
Header edit Set-Cookie ^(.*)$ $1;HttpOnly;Secure;SameSite=Strict
For apache2 lower than 2.2.4
Header set Set-Cookie HttpOnly;Secure;SameSite=Strict