Hi, Posting this since I can't find any post regarding this issue. I'm getting 411 Length Required issue on some websites when BitDefender Protection Shield is ON. I believe this is BitDefender issue specific. Someone has similar issue but with no real solution: https://support.mozilla.org/en-US/questions/1344632 Thanks…
Tell us how in this short survey! It will take about 2 minutes to complete. Thanks for your contribution to the community.