Hi, please try this : Certain Firefox problems can be solved by performing a Clean reinstall. This means you remove your Firefox program files and then reinstall Firefox. This process does not remove your Firefox profile data (such as bookmarks and passwords), since that information is stored in a different location.

To do a clean reinstall of Firefox, please follow these steps: Note: You might want to print these steps or view them in another browser.

1. Download the latest Desktop version of Firefox from this page) and save the setup file to your computer.
2. After the download finishes, close all Firefox windows (or open the Firefox menu and click the close button ).
3. Delete the Firefox installation folder, which is located in one of these locations, by default:
   • Windows:
     • C:\Program Files\Mozilla Firefox
     • C:\Program Files (x86)\Mozilla Firefox
   • Mac: Delete Firefox from the Applications folder.
   • Linux: If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see Install Firefox on Linux. If you downloaded and installed the binary package from the Firefox download page, simply remove the folder firefox in your home directory.
4. Now, go ahead and reinstall Firefox:
   1. Double-click the downloaded installation file and go through the steps of the installation wizard.
   2. Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.

More information about reinstalling Firefox can be found here.

WARNING: Do not use a third party uninstaller as part of this process. Doing so could permanently delete your Firefox profile data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. These cannot be easily recovered unless they have been backed up to an external device! See Back up and restore information in Firefox profiles.

Please report back to say if this helped you!

Thank you.

I did a full re-install. Didn't fix. Creating a custom setting for history that saves cookies and cache did create a fix. However, that means I'm no longer using private mode, which is not what I wanted. So I guess that means private mode overrides exceptions? In which case, it isn't really an exception now is it? Is there another possible solution?

You only need to paste the protocol plus the domain (https://armorgames.com) in the exception window. It is possible that you need to create an exception for more domains.

Try to enable all cookies including third-party cookies temporarily to see for what domains cookies are created. Then you can create an exception for all involved domains.

As far as I can tell, armorgames.com is the only name being created. And it is specifically the only website that can be entered into the exception list, as in I can't enter a specific games web address, only armorgames.com. This is looking like it's a problem specific to the use of private browsing mode. In which case, I still wonder why exceptions don't make exceptions then. It's starting to look like easiest solution would be to just use a seperate browser for games.