The task of antivirus can be attributed - to protect the computer system from malicious software. But, it should be noted that the antivirus is also a program installed on the PC. And, like all programs, it is prone to system malfunctions that lead to failure.
The main reasons why the antivirus does not start
There are five main reasons why the antivirus program does not start: the license has expired, an important component is missing in the root folder of the antivirus, the presence of two or more antiviruses on the computer, blocking by a firewall, incompatibility with the system.
Detailed consideration of these reasons
When the license expires, most antiviruses stop using most of their capabilities. But there are those that completely stop their work and resume only after the introduction of the license key. Usually, clicking on the icon of such an antivirus, a window pops up containing a field for the field for the key and two tabs "Buy a product" and "Close". To fix this problem, get a license key or remove the old antivirus and install a new one that does not require a license.
As a rule, licensed antiviruses have more working potential than programs that do not need licensing.
The absence of one or more components may occur due to their accidental removal. So, for example, when installing an application, the installation path in the package with the antivirus will somehow be indicated, and one file of this application will replace the file with the same name of the anti-virus program. Such a replacement is fraught with the failure of the computer defender. The same problem occurs with some uninstaller programs. Cleaning the PC from errors, the uninstaller erases a number of necessary files, mistaking them for insignificant. You can fix this error by uninstalling and reinstalling the antivirus.
In no case should you install more than one antivirus on your computer! Such a procedure will lead to system errors and termination of the operating system. The easiest way to deal with such a collapse is to reinstall the system or use the restore function.
In this case, system rollback will be possible only through the BIOS.
Some antivirus programs do not work without network access. Access to the network is blocked by a firewall - a standard program in the Windows line. To turn it off, use the following algorithm: Start Menu - Control Panel - Windows Firewall - Turn Windows Firewall on or off - Turn off Firewall. On later versions of Windows, the firewall can not be disabled, but only in the program itself, check the box next to "Allow the program to access the network."
Each program has minimum system requirements, in the absence of which it will not work on the computer. To avoid such a case, carefully read the antivirus requirements for the system.
