Latest Answers

• Clear Private Data wiped my open tabs and history. I use Firefox Sync. Can I recover my tabs?

  On my desktop, under Synced Tabs, I only see the current handful of tabs open on my phone.

• FF sometimes issues malformed requests (Accept-Language contains a line break) ==> error 400

  Good point! Thanks for prompting me to pare down my accepted languages.

• FF sometimes issues malformed requests (Accept-Language contains a line break) ==> error 400

  It wasn't malware, or cookies, or anything else. Somehow, FF was using a malformed Accept-language setting. * I opened a tab at '''about:config''' and filtered the settings on ''…