Using the new DPI SSL/TSL, Linkedin does not open with Firefox on Mac

What exa t error did FF throw? I personally got for various sites a rx reissued serial or similar error. Resetting (cleanung up) FF did resolve the issue. Seems that FF stores some cert serials, and blocks sites if a already issued serial get reused.

Maybe it helps (instead a TLS exclusion) to MITM Linkedin. In my Case Linkedin works fine intercepted.

What exa t error did FF throw? I personally got for various sites a rx reissued serial or similar error. Resetting (cleanung up) FF did resolve the issue. Seems that FF stores some cert serials, and blocks sites if a already issued serial get reused.

Maybe it helps (instead a TLS exclusion) to MITM Linkedin. In my Case Linkedin works fine intercepted.

SaschaParis, 

thanks for your input. I already cleared the cache and I obtained very little improvements, but...amazon.it works but changing from 120 to 480 GB does not work at on this link.

https://www.amazon.it/Kingston-SSD-A400-120GB-Solido/dp/B01N6JQS8C/ref=sr_1_2?__mk_it_IT=%C3%85M%C3%85%C5%BD%C3%95%C3%91&keywords=ssd+80gb&qid=1577431041&sr=8-2

Clearing cache doesn't help, as FF stores cert serials.

try  this

Sascha,

it improved but the issue persists.

To reset FF on MAC, the steps are little different. https://malwaretips.com/blogs/reset-firefox-settings/

It took time to reset FF and now some sites are opening (very slowly compared to Proxy mode, but My ebay does not open at all).

Check the screenshot.