First posting so I hope I get this right. Windows did a raft of updates yesterday. 9 in total. Since then Firefox will open ok, and will view all pages ok with the exception of Youtube videos and Firefox support pages both of which crashes a tab when I try and access them. I have already tried clearing firefox caches, refreshing firefox, and have done a reinstall of firefox. The problems remain exactly the same. I have searched high and low for a solution but can find nothing relevant. All of the pages that crash Firefox work fine in Edge. A crash report from this morning is bp-649f4031-8cb8-4e15-b01e-dbfab0190225. I can supply details of the windows updates if that is of any help. Any help or suggestions would be gratefully received. Thanks.