I'm assuming a website is telling you that you don't have the ability to save cookies enabled, which is why you are asking this question. In reality, if you have never actually disabled the ability to store cookies yourself, that's likely not what's causing the issue. Instead, it's more likely that Firefox's [[Enhanced Tracking Protection in Firefox for desktop|Enhanced Tracking Protection]] is preventing the website from storing cookies on your browser that may be used to track you. If you trust the website and want to disable Enhanced Tracking Protection on that specific website, see the '''What to do if a site seems broken''' section of the [[Enhanced Tracking Protection in Firefox for desktop]] page for more information. Hope this helps.

See also: *https://support.mozilla.org/en-US/kb/websites-say-cookies-are-blocked-unblock-them