There are several ways to open a file if you do not have access to it. The most common variant is that the file is simply infected with a virus and must be deleted. But sometimes the file just uses another application that prevents it from launching. Therefore, to run such a file, you need to unblock it.
Instructions
Step 1
First of all, you should consider what kind of file it is. If this is not a system program, but just a recently downloaded file (especially the.exe format), then it is quite possible that it is a virus or other malicious software. If a file has been downloaded recently, and you are not sure about it, then before starting it, it is advisable to check it with an antivirus, and not a simple one (for example, the free version of Avast), but an effective one. To perform a similar procedure, the following are suitable: paid Kaspersky Internet Security or free CureIt. Alternatively, if the file is less than 20 megabytes, then you can check online for many antiviruses at once (follow the link https://www.virusscan.jotti.org/ru). If a virus is found, then it is better to remove it, and then check the entire operating system for viruses
Step 2
When this happens with files of system or standard Windows programs, then everything is much more serious. Sometimes viruses infect standard programs such as paint, notepad, etc. In this case, you should remove them, and you can reinstall them as follows: Start - Control Panel - Add or Remove Programs. There you need to select the item Install programs, then insert the installation disk with the operating system into the drive and restore the programs damaged by the virus. Undoubtedly, with the help of some antiviruses, it is possible to "restore" files, but it is better for the system to remove the virus and reinstall the files, since even the restored programs may be again susceptible to the virus or work incorrectly.
Step 3
If the security software does not detect a virus in a file that does not open, then this means that the file is being used by a certain application, and, accordingly, it will not start until the application stops using it, or until you disable it. In order to find out which application is using this file, it is best to use a free utility like AVZ or IObit Security 360 and find out exactly what the matter is. If a file is used by an unknown application, and it has nothing to do with system applications, then most likely this is a type of malicious software that blocks some processes. Using the same utilities, you can find the application, then delete and restart the computer, after which the file can be launched.
Step 4
Perhaps the situation is that the file is used by the system application simply because of some system error (possibly due to a long-term diagnostic). If the file is not related to the system, then the problem is solved. To unlock a file, just download the Unlocker program, then right-click on the file and select “unlock”.
