Why Is McAfee Scanner Service Slowing Computer?

After installing any antivirus scanner on a computer, it will be loaded into the computer's memory every time the computer is started. Loading the antivirus system into memory helps protect your PC at any time, from any danger.

When an application is loaded into memory, like an antivirus program, it will consume an amount of all its available memory on the PC. In the event that your computer is low on memory or low on memory, this may influence the overall performance of the computer. Thus the computer slows after installing McAfee.


Today, most computers have a lot of memory. However, they could still slow down the system since the antivirus is scanning all the files on the PC to find out if they are infected. You can check whether the antivirus program is scanning your computer, block the scan, and alter when and how often the scan should occur. It may also have the ability to alter how intrusive the scan is, relative to the amount of memory it uses after the scan.

Change when and how often the scan happens


Your antivirus program will allow you to modify whether a scan is complete (i.e. the daily time) and how often a scan is completed (i.e. the day of the week). Since each antivirus program differs, the following are general steps to help you change the scan frequency.



  • Open the antivirus program console by right-clicking the icon related to the antivirus application in the Windows Notification Area (lower right section of the screen).
  • From the antivirus program console, start looking for an option to update the scan program. It could possibly be called a "Programmer" or comparable. The option can be found in the Settings or Advanced Settings section.
  • From the current scan program, modify the scan program at the frequency you choose. We recommend that the scan be run at least once every two to three days, to keep your computer protected from virus threats.


As an example, users of the AVG antivirus program can fix their scanning program by following the steps below.


  • Click on avg application 
  • Click launch test centre
  • From the Test Center, under Scheduled Tasks, you can correct when and how often the scan runs. If you want to disable daily scanning, double-click the scheduled job, click Edit Schedule, and uncheck the box.


Change scan intensity

Some antivirus programs may allow users to alter the degree of scanning, the total amount of computer memory that is used during the scanning process. Setting the scan intensity can help prevent the computer from slowing down during the scanning process.




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