Fixing Javascript error: mutations are not initialized on VKontakte


Start with the basics

You can start with the most primitive thing - restart your computer.

Try restarting your computer

Try restarting your computer

This is especially effective if you previously downloaded some kind of update, and for it to work correctly you need a reboot.

And this is still somehow affecting the way Java works. Of course, this doesn't help everyone.

Let's consider other methods.

SOS! A terrible red window with an incomprehensible error!

In fact, this is not such a terrible mistake. It can be solved quite simply.

Unfortunately, in recent years, VK has been upsetting its users with many system glitches. And therefore, the latter have to dodge and get out of this situation using different ways to find solutions.

After numerous encounters with similar errors on a well-known social network, I found three universal solutions that are guaranteed to help out of such situations. But first, let’s understand with you what is written in this red window.

"JavaScript error: upload is not defined"

is an error that occurred when trying to download a resource (video, audio file, etc.). If this phrase is translated into Russian, we get:

It could be a cache issue

Click Conrtol F5

Press Control + F5

Your next step is to clear your Java cache and browser.

Perhaps they have errors that directly affect the operation of the VC.

Press Ctrl+F5 for a few seconds. The page you are on should reload.

If the problem was related to the cache, then everything should be normalized.

And the words “javascript error mutations are not initialized” will no longer scare you.

Detection and removal of a virus in the system hosts file

Probably, the cause of such an unpleasant incident is viruses that have crept into your computer system. They work cunningly: they make entries in the system, as a result of which access to some sites is blocked (hence the JavaScript Error “VKontakte” when trying to use this service). Therefore, in order to open access, you need to clean the corresponding file, that is, hosts. This can be done automatically or manually. We'll look at how to do it yourself.

Host File

However, the case may be more advanced. Then try clearing the Host file on your device.

He is a potential target for virus programs. Unfortunately, antiviruses are not able to detect absolutely all viruses, because they are created every day.

So, it is viral activity that can block your access to different sections of the site, in this case, Vkontakte.

Bring the Host file into working order. To do this, go to the etc folder at the following address: C:\ Windows\ System32\ drivers\ etc. It will also contain that Host file.

You can edit it using notepad. But first right-click on it to run as administrator.

Otherwise, nothing will work; the OS will not allow you to make any changes.

More precisely, you won’t be able to save it. So don't do the same job twice.

Editing a file means adding additional information to it, such as an IP address and website address. Using VKontakte as an example, the file should contain the following:

Host File

Host File

The Host file may not be on your computer. And this is absolutely not fatal - on the contrary, if something is missing, then viruses cannot attack it.

If the Host file is hidden

True, don’t rejoice too early, check if the file is hidden. Also, the Host may simply be located in a different location. To find out where he is hiding, you will have to look into the registry.

Win+R

Hold down Win+R or type regedit in the search bar. Go to this directory: HKEY_LOCAL_MACHINE\ SYSTEM\ CurrentControlSet\ Services\ Tcpip\ Parameters\.

Next, find DataBasePath - the location is written opposite it. This corresponds to the location of the Host file.

However, this method is more serious. Be careful not to delete other important files in the registry.

This can affect your computer's performance much more than a Java error. True, you don’t need to be immediately afraid to even go into the registry itself.

The main thing is to find the file you need, that’s your whole task. There is no need to move, delete, etc.

JavaScript Error Troubleshooting Options

No matter what specific JavaScript error you're experiencing, the steps to resolve it are the same. As a rule, it is enough to use one of the options described above. It is especially worth paying attention to reinstalling/changing the browser used and cleaning the “hosts” file.

You can also try resetting your browser settings (Properties/Advanced tab). After this you will need to restart your computer. In some cases, this simple action helps get rid of the pop-up error. In addition, it is necessary to check the entire operating system for viruses; perhaps they are hiding somewhere else. To do this, you need to have a powerful and properly working antivirus.

Browser

There is an additional way to solve the problem for those who use the Mozilla Firefox browser.

Set dom.storage.enabled to true

Set dom.storage.enabled to true

You need to correct the registry of this program. Look, the dom.storage.enabled parameter in Mozilla about:config should be set to true.

Ways to deal with JavaScript errors

If, when you try to turn on audio or open a video file, nothing works, and a hateful message appears in the upper corner of the screen saying that a VKontakte JavaScript Error has occurred, then try the following first:

  1. Use a different browser. For example, if you are currently working in Opera, then install Google Chrome or Mazila. Perhaps the problem will go away.
  2. Press the keyboard shortcut Ctrl+F5. In some cases, this action clears the error.
  3. Scan your computer using an antivirus (Dr.Web or another). Don't forget to update the program first.
  4. Open the “My Settings” menu from your VKontakte page and check the box next to “Always use a secure connection.” Perhaps this will help too.
  5. Clear the caches of your browsers, clear the Java cache.

If none of these steps helped and the VKontakte JavaScript Error still prevents you from using all the functions of the resource, then the following method of solving the problem should work.

How to fix JavaScript error

Java

It is likely that you will need to reinstall Java.

At some point you could have damaged some program files, which is why you are now suffering with the error “javascript error mutations are not initialized”.

Installing Java

Installing Java

It is best to download updates or the program itself through the official website (https://java.com/ru/download/) so as not to pick up viruses somewhere.

By the way, it is better to update Adobe Flash Player. It can also cause similar errors.

JavaScript Error Types: A Brief Overview

This misfortune can significantly spoil the mood of those who were looking forward to enjoying pleasant music or passing the time watching an evening movie. To prevent this from happening, let's figure out how to fix the VKontakte JavaScript Error on your own. There are several possible solutions to the problem.

First, let's see what type of errors may appear:

  • initAddMedia is not defined;
  • cannot read property "length" of undefined;
  • cannot convert "opts.photos" to object;
  • cannot read property parentNode;
  • currentaudioid or simply undefined.

This is by no means a complete list of possible error messages, but the most common options are listed here. Next, we will consider existing methods for solving them.

How to fix JavaScript error

Temporary solution

If you urgently need to check messages, you can try accessing your page from another browser or through incognito mode.

To do this, press Control + Shift + N.

Incognito mode

Incognito mode

In some cases, which are not related to problems with the operating system itself, this works.

What does the error text mean?

In translation, the text of this error sounds like “Javascript error: Changes not initialized.” Typically, the occurrence of such (and similar) errors means a situation where some problems have arisen in the operation of the internal VK code, written in the Javascript programming language.

As I mentioned above, the characteristics of the user’s system have a rather distant relation to the reasons for the appearance of this error, while on some browsers this problem may appear more often (for example, Mozilla), and on others less often (Google Chrome).

Illustration of an error in VK

conclusions

Got rid of javascript error mutations are not initialized?

The problem with the error “javascript error mutations are not initialized” occurs to everyone. But it is solved in completely different ways.

It may go away on its own if it was related to technical work on the site. The notorious reboot with a full scan of the computer for viruses will also come to the rescue.

Before digging into the registry, try opening your page through another browser, incognito mode, or adding the letter m to get m.vk.com.

The mobile version of the application is somewhat simplified, so sometimes errors do not occur in it.

If all this does not work very well, install all the necessary updates, in particular, Java and Adobe Flash Player.

Also try updating your browser if a new version is available. Before this, you can still clear the cache of both the page itself and the browser as a whole.

As a last resort, go to the registry to edit the Hosts file.

If none of this helps, but the error appears only on the VKontakte website, it makes sense to contact technical support.

Other types of JavaScript errors "VKontakte"

In addition to problems with audio and video files, this social network can also “please” with a number of other, even more ridiculous JavaScript Errors “VKontakte”. What to do if dialogs do not open, messages are not sent and comments are not attached to photos - an addEventListener error is thrown; the wall does not work - wall is not defined; There is no access to other critical functions. This list is only a part of the system's problems or failures, which make it difficult to use the popular resource.

How to fix an error in Discord

The Discord client sometimes experiences a "JavaScript error occurred in the main process" problem. Below we will describe two ways to deal with it when launching Discord. At least one method will definitely work, so if one doesn’t help, you should definitely try the second.

Client update

Sometimes this problem occurs due to the need for an update, even though automatic program updates were disabled for some reason. You should update the client yourself by following the instructions below:

  1. Open Task Manager , disable all processes related to Discord.
  2. Click combination Win + R and type %AppData%.

    Run window

  3. Exit back from Roaming to AppData .
  4. Next, go to the Local and find the Discord folder in it.
  5. Double-click on Update.exe , which initiates the program update.
  6. Turn on Discord.

After completing all the steps, the program will be updated upon startup. Once the update installation is complete, you should check to see if this issue no longer occurs. If it continues to appear, you need to proceed to the second method.

Reinstalling the client

If the first method does not help (it really only helps in a minority of cases), the only option left is to completely remove the program and clean install it. To do this, you need to perform the following sequence of actions:

  1. Open Task Manager , disable all processes related to Discord.
  2. In the Control Panel , find Programs and Features and open.
  3. Find the line with the word Discord and delete it, then repeat steps 2-4 from the previous method to find the Discord directory and delete it. Then go to AppData , go to Roaming and also delete the folder called Discord.
  4. Reinstall the Discord client .

Restoring startup functionality in Windows 10

other methods

If the error still does not go away, then all that remains is to check the system for viruses and install the latest Windows system updates.

If a JavaScript error occurs in other programs or on the Internet, which is much less common, then all the methods described above will work. In the case of applications, you can perform the same actions as with Discord, but for the desired program.

Status value

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