Both the download and cookie exception dialogs are empty. I know there are entries there but I can't see them. This has been a problem since release 5.0 on Mac OSX.
They're empty, no entries. When I download a file I can see the download progress but once the download is finished the entry disappears.
The Cookie Exceptions list is always empty. But I know the list contains entries because I have Firefox configured to ask me about allowing cookies. So there should be many entries with sites either allowed, allowed for session, or denied.
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Firefox > Preferences > Privacy > Firefox will: "Use custom settings for history" > [X] "Remember download history"
The file "permissions.sqlite" stores 'allow' and 'block' exceptions for cookies, images, pop-up windows, and extensions (software) installation.
You can try to delete that file in case there is a problem with it.
You can also try:
Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
- Don't make any changes on the Safe mode start window.
- https://support.mozilla.com/kb/Safe+Mode
Remember Download History - that worked.
Had to delete my "permissions.sqlite" file.
I had the same issue: Exception list empty, but exceptions still present. I've inspected my permissions.sqlite file and found an entry with permission set to -1. After changing this to 1, all exceptions were visible again.
Interesting. Can you give an example so I can find an example. Sometimes the files are completely blank.