Access error "400 Bad request": what is it and how to fix it?

Who among fans of wandering around the Internet did not encounter the error “400: Bad request” in the browser? True, not all surfers know what it means and why it arises. Now we will try to clarify this situation.

400 Bad request: what does this error mean ?

It is believed in the computer world that the error number 400 is exclusively user-generated when you enter the wrong request (URL) to access a specific site on the World Wide Web. Let us disagree with this.

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