I got a message that told the browser is not supported by facebook, face book is not opening why?
facebook is not opening.
- Shockwave Flash 30.0 r0
- User Agent: Mozilla/5.0 (Windows NT 6.1; rv:61.0) Gecko/20100101 Firefox/61.0
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Note that you use Firefox 61.0 Beta (or Developer Edition) and Facebook may not work properly.
If you use extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) that can block (wanted) content (Adblock Plus, NoScript, Disconnect, Ghostery, Privacy Badger, uBlock Origin) always make sure such extensions do not block (wanted) content.
- make sure your extensions and filters are updated to the latest version
Firefox shows the shield icon at the left end of the location/address bar in case content is blocked by Tracking Protection.
- click the shield icon for more detail and possibly disable the protection
- check the Web Console for more detail about what content is blocked by Tracking Protection
- "3-bar" menu button or Tools -> Web Developer
You can remove all data stored in Firefox from a specific domain via "Forget About This Site" in the right-click context menu of an history entry ("History -> Show All History" or "View -> Sidebar -> History").
Using "Forget About This Site" will remove all data stored in Firefox from this domain like history and cookies and passwords and exceptions and cache, so be cautious. If you have a password or other data from that domain that you do not want to lose then make sure to backup this data or make a note.
You can't recover from this 'forget' unless you have a backup of involved files.
If you revisit a 'forgotten' website then data from that website will be saved once again.
You can create a new profile to test if your current profile is causing the problem.
See "Creating a profile":
If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.