FIX: Your Client Has Issued A Malformed Or Illegal Request, YouTube Error 400 Error

Are you entercouring the “Youtube Error 400: your client has issued a malformed or illegal request” or other similar errors while trying to watch videos online on the YouTube app? Well, don’t panic, this post is useful for you. Here are some easy solutions to fix the Error 400 in YouTube.

Fixing YouTube error 400 is simple, and the first thing you should do is to check if this issue happens in other web browsers. Your cache can also be a cause for this issue, so we would recommend you to check in order to fix this error. If YouTube error 400 still happens, be sure to check if the browser installation is in order and check if the link is correct.

How to Fix YouTube Error 400 Error

Method 1. Clear the cookies from Chrome’s settings

1. Launch Chrome.

2. Open Settings, click Advanced and then access Content settings.

3. Go to Cookies, then click See all cookies and site data.

4. In the search-bar from the top-right of the page, type “youtube“. All the cookies related to YouTube should display. Select only the faulty ones called gsScrollPos-[4-digit number] or click on Remove all shown.
Or you can also do the same process by opening a new tab in Chrome and by typing in the address bar:

chrome://settings/siteData

After doing that, check if Malformed or illegal request message still happens.

Method 2. Clear cookies using Developer Tools

1. Open Chrome, go to YouTube page.

2. Now, on your keyboard press Ctrl + Shift + I to open the Developer Tools.

3. In the Developer Tools, click More > Application.

4. In the left panel, under Storage, expand Cookies, all the cookies should display.

5. Delete the gsScrollPos-[4-digit number] and the issue should be gone.

After doing that, check if Malformed or illegal request message still appears.

Method 3. Other general fixes

– Go incognito on Google Chrome

– Replace the direct link with the video id.

– Clear your cache and cookies from Clear browsing data in Chrome.

– Reinstall Chrome.

These methods are relatively simple and you should have no problem fixing Error 400: your client has issued a malformed or illegal request.

Hope something helps you.

FIX: Your Client Has Issued A Malformed Or Illegal Request, YouTube Error 400 Error
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