How to fix 400 error on YouTube. Access error "400 Bad request": what is it and how to fix the situation? Reinstalling the Windows Operating System program
Internet surfers very often encounter the problem that instead of the intended page, when opening a resource in a web browser, a 400 error containing a description of the incorrect request is displayed. It is believed that this failure is classified as a user failure, and is associated with errors in entering the address of the requested resource, but this is not always the case.
Error 400 (Bad Request) - what is it?
Initially, the error itself can be interpreted precisely as an incorrect request, when an Internet surfer enters an incorrect resource address. This is a so-called syntax error. For example, when trying to access the Mail.Ru mail server, a Ukrainian user can easily enter the domain UA instead of RU, rightly believing that initially the site can redirect depending on the region or location of the user.
But such a domain actually does not exist. So it turns out that instead of entering the start page, the surfer receives a message that a 400 error has occurred (Bad Request - incorrect, incorrect or bad request).
Impact of Windows Services
One of the reasons for the failure, as some experts note, may even be the influence of the services provided by anti-virus software and the security systems of the Windows operating system itself.
The same firewall (firewall) or Windows Defender can easily provoke a situation where error 400 appears. In this case, we are talking about blocking sites and their content. To eliminate this problem, in the simplest case, you should add the address of the Internet resource to the list of exceptions of all security programs. In the case of a built-in firewall, you will have to create a new rule.
Error code 400: Nginx
Often the appearance of an error message is accompanied by an indication of blocking by the Nginx service. There can be two situations: either it is a virus, or the original component actually worked, which, however, is used exclusively in UNIX-like systems, and by and large should have nothing to do with Windows.
The trouble is that in this case a request is made to the server, which is running such an OS, which can block requests made from a specific IP address. In turn, the address itself is marked as unreliable and entered into a special firewall LOG file, which should prevent further attempts to access it. The message that a 400 error has occurred may directly indicate that the system contains a huge amount of computer garbage in the form of caches and Cookies. All this needs to be cleaned.
What to do first?
In all cases when error 400 occurs, first in the browser or using system tools (if by default the Internet is accessed through built-in tools like Internet Explorer or Edge), clear your browsing history, delete cache and cookies. By the way, you can use exclusion lists only after complete cleaning.
Doing this manually is a thankless task, so to simplify the work you should give preference to automatic optimizer programs (Glary Utilities, Advanced System Care, CCleaner, etc.).
On the other hand, it is worth checking the system for various types of adware or spyware, using not an anti-virus scanner, but portable versions of applications like Anti-Malware.
Sometimes even a simple computer restart can help. It is possible that this error was caused by a short-term glitch in the operating system or the default browser (it is very possible that when accessing the requested page in another browser, the error will not appear). In general, the bulk of the work to fix the problem comes down to freeing up system resources and browser memory. After this, the problem disappears in almost all cases, except for the lack of connection or low Internet connection speed, when a timeout may occur - the server waits for a response to a request. But this is another question, although the solutions proposed for this situation also help in other cases when the problem is related to requests in browsers.
For those who do not want to deal with the problem on their own, a special Fix It utility from Microsoft has been created, which can correct some Internet connection errors (and not only). So you shouldn’t neglect such a tool either. In some cases, it can be an effective means of eliminating failures of this kind.
Sometimes users of the full and mobile versions of the YouTube website encounter an error code 400. There can be several reasons for its occurrence, but most often this problem is not anything serious and can be solved in just a few clicks. Let's look at this in more detail.
Browsers on your computer do not always work properly; various problems arise due to a conflict with installed extensions, a large cache size, or cookies. If you get an error code 400 when trying to watch a video on YouTube, we recommend using the solutions below.
Method 1: Clear browser cache
The browser stores some information from the Internet on the hard drive so as not to download the same data several times. This feature helps you work faster in your web browser. However, a large accumulation of these same files sometimes leads to various problems or slower browser performance. Error code 400 on YouTube can be caused by a large number of cache files, so first of all we recommend clearing them in your browser. Read more about this in our article.
Method 2: Clear cookies
Cookies help a site remember some information about you, such as your language preference. Undoubtedly, this greatly simplifies the work on the Internet, but such pieces of data can sometimes cause various problems, including errors with code 400 when trying to watch a video on YouTube. Go to your browser settings or use additional software to clear cookies.
Read more: How to clear cookies in Google Chrome, Opera, Mozilla Firefox, Yandex Browser
Method 3: Disable extensions
Some plugins installed in the browser conflict with various sites and lead to errors. If the previous two methods did not help you, then we recommend paying attention to the included extensions. You don’t need to delete them, just disable them for a while and check if the error on YouTube goes away. Let's look at the principle of disabling extensions using the Google Chrome browser as an example:
Read also: How to remove extensions in Opera, Yandex Browser, Google Chrome, Mozilla Firefox
Method 4: Disable Safe Mode
Safe mode on YouTube allows you to restrict access to dubious content and videos that have an 18+ restriction. If an error with code 400 appears only when you try to watch a specific video, then it is likely that the problem lies precisely in the enabled safe search. Try disabling it and following the link to the video again.
Fixing error code 400 in the YouTube mobile app
Error code 400 in the YouTube mobile app occurs due to network problems, but this is not always the case. The application sometimes does not work correctly, which is why various types of problems arise. To fix the problem, if everything is fine with the network, three simple methods will help. Let's look at them in more detail.
Method 1: Clear the application cache
A full YouTube mobile app cache can cause a variety of problems, including error code 400. The user will need to clear these files to resolve the issue. This is done using the built-in operating system tools in just a few simple steps:
Now all you have to do is restart the application and check if the error goes away. If it is still present, we recommend using the following method.
When trying to log into an Internet site, this is a very common phenomenon. There are many reasons why this failure may occur. But correcting the problem that has arisen involves several solutions, the application of which will depend solely on the root cause of the current situation. Let's consider all possible options.
Error 400 http request: reasons for occurrence
As is already clear, you will have to choose a method for eliminating the problem only after identifying the causes of this phenomenon. It's not even about the browser. First, try to simply translate the English message. It literally means “bad request.” In other words, it means accessing a non-existent resource.
This is the most common carelessness of a user who incorrectly entered the site address or entered the end of the domain name (for example, access to the Mail.ru site will be denied when entering the request Mail.ru.com or something similar). This is the most common problem.
But, basically, among all the things that error code 400 may indicate, the following root causes should be highlighted:
- incorrect URL entry;
- Browsers are cluttered with temporary files;
- blocking access from antiviruses and firewalls;
- viral exposure;
- problems on the server being accessed.
How to fix error 400 using the simplest method
Let's start with the last point. The fact is that if the problem is really related to the remote server, there is nothing else to do but wait a while and then try to access again.
But Windows systems themselves are far from flawless (everyone knows this). The appearance of error 400 may be associated with short-term failures and disruptions in the operation of the OS, which do not cause critical consequences for the system as a whole, but provoke the inability to access some Internet resources.
In this case, before taking further measures, it is recommended that you simply restart your computer or laptop and try to access the site again. It is quite possible that this approach will work. But you shouldn’t rely solely on this technique (these are isolated cases).
If the message contains a reference to Nginx, we can safely say that this is indeed a problem related to the operation of a server running UNIX systems. There's nothing you can do about it. Perhaps the server’s operation will be restored after some time, so you’ll just have to wait.
Clearing temporary files and cookies
The main situation, when a link to a 400 error appears in the browser instead of the page being opened, is considered to be the presence of too many temporary objects in the browser.
As is already clear, in this case the problem can be eliminated quite simply. To do this, any browser uses history clearing items or something similar, where the checkboxes opposite the lines for clearing temporary files, Cookies and browser cache are required. After completing such actions, it is recommended not only to restart the browser, but also to perform a complete restart of the entire system.
Removing blocking from protective equipment
Another fairly common problem associated with the appearance of error 400 is access blocking at the level of anti-virus software and the built-in protection of the operating systems themselves (firewall and Defender).
First of all, you need to pause the anti-virus protection for, say, ten minutes and check the possibility of access. At least this is the problem with Avast antivirus tools. If access is restored, either add the site you are looking for to the exclusion list, or simply change your standard antivirus to another program.
As for the firewall, it can also cause error 400 to appear. It should be disabled, although the system does not recommend this. You can still try. If access to the resource is restored, the firewall can be left disabled or the web browser used can be added to the exclusion list.
Virus check
As is already clear, not everything is so simple with viruses. It's a double-edged sword, as they say. On the one hand, antiviruses can block access, on the other hand, malicious codes themselves can perform similar actions.
In this case, it is necessary to perform an in-depth scan of the computer using portable scanners. It would also be a good idea to check for adware in your system. In the first case, you can use programs like Dr. Web CureIt or use utilities like Rescue Disk with a full scan of the computer even before the operating system starts when booting from removable media with the program. In the second case, the AdwCleaner application is a good choice.
A few final words
As can already be seen from the presented material, the main problem with the appearance of error 400 is related to the garbage located in the browser. If cleaning it with built-in browser tools does not give any effect, you can use special optimizer programs like CCleaner, Advanced SystemCare or the like. Such software packages have cleaning modules (even the system cache); you can find them in the privacy cleaning section.
But in almost any application there is a special button for quick optimization, and to carry it out you only need to mark the necessary points, which will be checked, after which the entire system will be cleaned and speeded up.
Finally, if none of the solutions suggested above worked, try simply changing the default browser you use to surf the Internet, or do a hard reset.
Who among those who like to wander the Internet has not encountered the “400: Bad request” error appearing in the browser? True, not all surfers know what it means and why it occurs. Now we will try to clarify this situation.
400 Bad request: what does it mean?
As is believed in the computer world, error number 400 is purely user-related when entering an incorrect request (URL) to access a specific site on the World Wide Web. We beg to differ.
Of course, you can enter an incorrect address, but sometimes even when the address or link is opened correctly, the “HTTP: 400 Bad request” error appears again and again. There can be many reasons for this. This is especially often evident when accessing personal hosting services hosted on different, independent servers from different providers. What is the reason?
Request syntax errors
Indeed, one of the root causes can be called a violation of the correct entry of the page address. Let’s take a simple example: when trying to access the same mail server Mail.ru, a Ukrainian user can enter a URL in the address bar that seems to correspond to his region (in this case, let’s say it is the mail.ua address).
In reality, such a site with a postal service does not exist in nature. It is clear that any Internet browser will immediately display the message “400: Bad request”. But even with this formulation of the question, you can find a bunch of other reasons for the access error.
"400: Bad request Nginx" error problem
The Nginx system itself is either a specific proxy mail server or a web server running under UNIX systems.
Typically, errors of this kind are associated with an incorrect server response for a request from a specific IP address. The error results are recorded in a special LOG file, after which they are automatically entered into the firewall as unreliable. Thus, hosting operations are disrupted, regardless of what operating system or browser is used in this situation.
Firewall Impact
As is already clear, the “400: Bad request” error often occurs when a firewall blocks a request.
A way out of this situation may be to add the site address or access device to the list of exceptions. For Windows systems, this is done by accessing the security menu located in the standard “Control Panel”.
In principle, there is nothing wrong even with disabling the firewall completely (of course, if you have a powerful antivirus package). Some clarifications also need to be given on this score.
Antivirus exclusion list
As a rule, the most common standard antivirus packages have their own built-in firewall. It can also block potentially unsafe or unwanted content.
In this situation, if an error message “400: Bad request” occurs, you should do the same as in the case described in the previous subheading.
The most necessary actions
Speaking about error 400, it is worth highlighting the general principles for solving such a problem. To get started, in the installed browser you just need to clear your browsing history, delete cache files and cookies. Only then can exclusion lists be applied.
By the way, after clearing unnecessary garbage in the browser, it is strongly recommended to restart the computer terminal. It is likely that the problem will go away on its own. If this does not happen, you will have to contact your provider (especially if the error occurs in all browsers). It may very well be that the hosting does not work or access to certain resources is blocked precisely because of malfunctions in the equipment of the provider company.
In any case, at least one of the proposed solutions to the problem when the “400: Bad request” error occurs should help. If this does not work, especially in cases where messages related to Nginx blocking appear, it is worth checking the system for viruses, because many of them disguise themselves as this service.
In addition, it is worth separately checking your computer for the presence of advertising or spyware such as Malware, Adware or Spyware using specialized software. It is very possible that the unauthorized installation of some additional elements, such as quick access panels, led to disruption of the system as a whole.
Who among those who like to wander the Internet has not encountered the “400: Bad request” error appearing in the browser? True, not all surfers know what it means and why it occurs. Now we will try to clarify this situation.
400 Bad request: what does this error mean?
As is believed in the computer world, error number 400 is purely user-related when entering an incorrect request (URL) to access a specific site on the World Wide Web. We beg to differ.
Of course, you can enter an incorrect address, but sometimes even when the address or link is opened correctly, the “HTTP: 400 Bad request” error appears again and again. There can be many reasons for this. This is especially often evident when accessing personal hosting services hosted on different, independent servers from different providers. What is the reason?
Request syntax errors
Indeed, one of the root causes can be called a violation of the correct entry of the page address. Let’s take a simple example: when trying to access the same mail server Mail.ru, a Ukrainian user can enter a URL in the address bar that seems to correspond to his region (in this case, let’s say it is the mail.ua address).
In reality, such a site with a postal service does not exist in nature. It is clear that any Internet browser will immediately display the message “400: Bad request”. But even with this formulation of the question, you can find a bunch of other reasons for the access error.
"400: Bad request Nginx" error problem
The Nginx system itself is either a specific proxy mail server or a web server running under UNIX systems.
Typically, errors of this kind are associated with an incorrect server response for a request from a specific IP address. The error results are recorded in a special LOG file, after which they are automatically entered into the firewall as unreliable. Thus, hosting operations are disrupted, regardless of what operating system or browser is used in this situation.
Firewall Impact
As is already clear, the “400: Bad request” error often occurs when a firewall blocks a request.
A way out of this situation may be to add the site address or access device to the list of exceptions. For Windows systems, this is done by accessing the security menu located in the standard “Control Panel”.
In principle, there is nothing wrong even with disabling the firewall completely (of course, if you have a powerful antivirus package). Some clarifications also need to be given on this score.
Antivirus exclusion list
As a rule, the most common standard antivirus packages have their own built-in firewall. It can also block potentially unsafe or unwanted content.