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Many types of malware can compromise us on the network
There are many types of threats have different goals. We are talking, for example, of ransomware, which aims to encrypt computers and files and then demand a financial ransom in return. Also malicious software such as keyloggers designed to steal passwords. Spyware is also very present, which is used to spy on users.
Fortunately we also have at our disposal tools that can protect us above all this. There are many types of malware removal applications, functions and features that prevent unwanted intruders from entering our computers. Also, logically, common sense is essential.
In short, there are many types of malware that in one way or another can compromise us on the network. We must always take steps to protect ourselves. Let’s see what to do when a virus has changed file extensions.
A virus has changed the file extensions
This is something that can happen to users. Suddenly they see that the file extensions like video, music, lyrics … have changed. The cause could be a virus that has infected the system and has taken over.
Use a security tool
Something fundamental that we need to do whenever our team has some kind of problem is to use a security tool. A good antivirus can help us in the fight against find malicious software in the system and also fix the problems it may have caused.
There are many options we have available, we can use them for all types of operating systems and devices, but without a doubt we must use one that is guaranteed, that allows us to achieve our goal and that also does not do more damage than we do. are. .
Back to default values
Another option is restore the default setting. Sometimes this type of threat not only adds different extensions to files, but can even change the configuration to use the browser, for example. Suppose we have a virus that only affects Mozilla Firefox and therefore is interested in us using that browser. You can change the Windows settings so that Firefox is the default application.
In this way they obtain that when the browser is started, when a page or any link from an application is opened, that one is open and not another.
To return to the default values we have to go to Start, open Settings, enter Applications, Default applications and there we change what interests us in case any threat has made changes. Also, we can give Restore.
Delete the UserChoice folder
To do this, it is best to previously perform a restore point on the system. Next we open the file Registry Editor. We need to start the Windows + R key combination and run regedit.
Once we’re here, we need to access the EquipoHKEY_CURRENT_USERSOFTWAREMicrosoftWindowsCurrentVersionExplorerFileExts path.
What we need to do when we get to this point is to go one by one by opening the extensions folders. In which we see a folder inside with the name UserChoice, we delete it.
Repairing the file association
We can also use the repair of file associations. Malware of this type can break file associations via the Windows registry. There are free third-party programs that allow us to solve this problem. An example is File Association Fixer, a program that allows you to avoid these problems.
In short, these are some solutions that we need to repair our system in case a virus has changed the file extensions.
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