How to clear (remove/delete) certificate (ssl/https) cache from chrome browser?

Solution 1:

I believe the following is the minimum required to clear the certificates out of the cache in Chrome 81.

• From the 3-dot menu (upper, far right), click "Settings". This opens a new tab.

• Just to reduce variables, I closed all other tabs.

• In the "Settings" tab, select "Privacy and security".

• Choose "Clear browsing data -- Clear history, cookies, cache, and more"

• In the "Clear browsing data" pop-up panel, put a check-mark at "Site Settings". Probably you can make everything else unchecked. (Note that if you don't uncheck "Cached images and files," it can take the computer several minutes to handle that task. So, uncheck it.)

• Click the "Clear data" button.

• When that task finishes, I recommend shutting down Chrome, and restarting it.

I tried a lot of stuff. I believe this was the action plan that actually made a difference.