Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

In (permanent) PB mode the disk cache and other storage in the profile folder aren't used. All session data is kept in memory and purged automatically when you close Firefox, so there is no need to use "Clear history when Firefox closes" and it isn't working as well. What you see for the disk cache can only be cleared if you run Firefox in regular mode, so you need to start Firefox normally if you want to clear such data or clear involved files/folders in the profile folder yourself.

@ cor-el Can you - or someone else - explain again more simply? Thank you.

Hi anonymity008

Thanks for creating a new question, so lets continue there.

• [/questions/1339944] Cache is not clearing