weird bug or my firefox got hacked?
A week ago installed fresh win 10, downloaded Firefox, logged in my firefox account. got my bookmarks, password and other good stuff synced in and at some point i recognized that my Youtube dosen't work right(issue exist only in Firefox, only on 1 PC)so here is a deal: I log in my google accout, open youtube page, it shows my subscriptions, recomended, playlist and other stuff except notifications, and if i like a video it dosen't add to "liked videos" playlist, in fact i can't manage any playlists at all and if i update a page it shows that i'm no longer loged in and i can't log out ither because page dosen't look like it should(simply not showing UI for account managment, only "dark theme","language" and other crap related to page) in Opera and even Edge everything works like intended. I used win. defender and other anti-virus soft to scan my PC - found nothing, there is no addons or anything like that, i completly removed evrything Mozila related and instaled it back - dosen't fix anything.
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The issue(s) you describe can be caused by corrupted cookies or blocked cookies.
- check the permissions for the domain in the currently selected tab in "Tools -> Page Info -> Permissions"
You can try these steps in case of issues with web pages:
You can reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.
- hold down the Shift key and left-click the Reload button
- press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
- press "Command + Shift + R" (Mac)
Clear the Cache and remove the Cookies for websites that cause problems via the "3-bar" Firefox menu button (Options/Preferences).
"Remove the Cookies" for websites that cause problems:
- Options/Preferences -> Privacy & Security
Cookies and Site Data: "Manage Data"
"Clear the Cache":
- Options/Preferences -> Privacy & Security
Cookies and Site Data -> Clear Data -> Cached Web Content: Clear
Start Firefox in Safe Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or userChrome.css is causing the problem.
- switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
- do NOT click the "Refresh Firefox" button on the Safe Mode start window
- https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode
- https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems
- https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop
- https://support.mozilla.org/en-US/kb/trackers-and-scripts-firefox-blocks-enhanced-track
Didn't work for me Still got same thing: "405. That’s an error. The request method GET is inappropriate for the URL /youtubei/v1/guide. That’s all we know. "
Try to set the Shockwave Flash plugin to "Never Activate" via "Add-ons -> Plugins" (about:addons).