400 Bad request (youtube)

Hello,

Kindly find below the solution:

How to clear cookies temporarily:
1. Tools > Clear Private Data > Uncheck all but cookies > Clear Private Data Now or
2. Tools > Options > Advanced > Network > Offline Storage (Cache): “Clear Now” or
3. Tools > Options > Privacy > Cookies: “Show Cookies” (specific problem sites)


If you have tried those resolves and are still not satisfied, try A different route:


Right click Start Button > Properties > Select Start menu (not classic) > Apply > Ok


Type %APPDATA% into search box at the bottom of the open start menu.


Goto “roaming” > Mozilla > FireFox > Profiles > should only be one folder left to choose.


(or address: C:\Users\YOURUSERNAME\AppData\Roaming\Mozilla\Firefox\Profiles\profile folder)


Select cookies.sqlite (and cookies.txt if present) > Delete


Have a good day,


W.