Hi chamberlainke, could you describe the dialog where are want to create the cookie exception? Normally you would use the "Manage Permissions" button in the "Cookies and Site Data" section of the Options page. That is the one not working for you?

Note that to avoid unpredictable results, I suggest clicking either "Allow" (allows either session or persistent cookies or "Allow for Session" rather than pressing Enter just to make sure the correct permission is added to the list.

Then once it is in the list you can click Save Changes.

I don't think Firefox checks whether you have visited a site you are adding to the list. You should be able to add anything you like.

Of course, that doesn't help with figuring out what site you need to add to the list. This setting (which makes Firefox behave like some versions of Safari) still requires you to know that in order to add an exception.

Thank you for your reply, jscher2000. The buttons at the top are greyed out, and when I try to save changes nothing happens. I thought it might have been a change from the upgrade. When I went searching all the articles I saw had instructions to not block per site.

I will try to reinstall FF, as last time that solved my issue (different issue last year).

If I still have the issue, I will repost here. Thank you.