Solved 400 Error on YouTube

[RyanSellers]

Any web tech people in here know how to fix this forever? For about a month or more now I've been having the 400 Error on YouTube everyday on and off. It's really annoying and making me mad at YouTube. I found out that when I clear my cookie and cache history it goes away for like an hour or so. But then it comes back... No idea how to get rid of it permanently. I also get an error when trying to add in a description, title, tags, end screen, and cards for new upload sometimes as well. Making it not able to save. Also sometimes when I change a thumbnail, it changes for like a day and goes back to how it was... YouTube is messing with something about the Thumbnail...

 

[LW]

Well 400 means Bad Request which is why it's likely to be an issue on your end. As you use stuff like TubeBuddy, could you try disabling any and all extensions for a bit to see whether or not those are causing it? That sounds like usual wrongdoing of a Browser Extension or Userscript.

 

[RyanSellers]

Well 400 means Bad Request which is why it's likely to be an issue on your end. As you use stuff like TubeBuddy, could you try disabling any and all extensions for a bit to see whether or not those are causing it? That sounds like usual wrongdoing of a Browser Extension or Userscript.

I think it was one of the browser extensions. Thanks for helping me with the problem!