Go to Firefox > Options > Advanced > Network and then do the following. Type about:config in the firefox address bar to launch settings. You may also edit settings for disk space usage in Firefox. I have the latest version of firefox – 50.1.0. It was gone but for a day but returned again next day. But first I tried deleting cookies & temp files and tried again. So, my first thought was un-installing firefox and re-installing again.
Disabling Superfetch with (net.exe stop superfetch)įinally, I zeroed in on firefox when I spotted a situation like thisĭoing and end task on firefox immediately took down DiskSpace usage to 4%.
It was causing a pathetically slow performance and was quite annoying. I must confess that I totally failed to make a connection between Firefox and high disk space usage in Windows (upto 99%/100%) all the time. I have been plagued by this issue for over 3 months now and I tried various methods to fix high disk space usage on my windows 10 laptop.