Today, when I clicked a link in an App, instead of opening a YouTube video, my Edge browser showed the message – ‘Error 400. Your client has issued a malformed or illegal request. That’s all we know.’
Until today, I worked around the error by using Edge in InPrivate mode to view the website.
But, for some reason (maybe a Grace), I used Bing to see how others fixed the problem.
I found this link useful, https://appuals.com/fix-youtube-error-400-client-has-issued-a-malformed-or-illegal-request/, but the instructions were written for Google Chrome users.
So, I adapted them for my Edge browser and found that the modified version worked.
To 1) ensure I could remember how to fix the issue the next time it came up and 2) to also share the knowledge with others who might be experiencing this problem, I wrote the adapted instructions here.
The steps I used were:
- Go to the YouTube.com website in the Edge browser
- Open the Developer Console (i.e. Press F12, or click the Edge menu … -> Developer Tools)
- Click the menu choice – ‘Debugger’
- Open the ‘Cookies’ -> ‘www.youtube.com’ folder
- Then right clicked the first cookie and clicked ‘Delete all cookies’ (shown below)
- Then refreshed the page
Fortunately, these steps worked and I was able to see the YouTube page again.
Hopefully, the adapted instructions will also work for you. However, if you use a different operating system and browser to me, the steps might not work. I am using Windows 10 with an Edge browser. See how you go.