<div>“Invalid Form Key. Please refresh the page.” issue</div>

Randomly I cannot login to frontend Magento default installation with the test account “[email protected]”.

Then I get the error message : “Invalid Form Key. Please refresh the page.“

I tried the suggested solutions of :

– Increasing the PHP max_input_vars to 100000

– Delete from the database table “core_config_data” the line with “path” = “web/cookie/cookie_domain”

– Clear the cache

But I still have this issue not being able to login, but if I try to login on another computer it is working!

Then this seem to be related to my own cookies or session.

I tried to delete all my cookies on my Firefox navigator and it is the same error again when trying to login.

Can someone help me pinpoint the problem?