HOW TO INSTALL MCAFEE ANTIVIRUS USING PRODUCT KEY
How to prepare your PC for installation
Perform steps 1 and 2 first, then try to install your McAfee software:
Step 1: Make sure that Windows is up to date
Step 2: Uninstall any existing security software
If you still have a problem, perform these next steps
Steps 1 and 2 are all that you typically need to do to prepare your PC for installation of a McAfee product. If you still have a problem installing your product even after following steps 1 and 2, continue with steps 3 and 4, below:
Step 3: Download and run the McAfee Pre-Install Tool
Step 4: Run the McAfee Consumer Product Removal (MCPR) tool
Related Information
These optional steps help to produce a trouble-free installation:
Temporarily disable pop-up or ad blockers
If your browser has a pop-up blocker, temporarily disable it so it does not interfere with your installation.
MCAFEE DOWNLOAD ALREADY PURCHASED
To disable your pop-up blocker, look in the Settings or Options menu of your browser. Remember to enable it again when your installation is complete.
Run Windows Disk Defragmenter
Defragmenting your hard drives improves performance.
NOTE: If you have a Solid-State Disk (SSD) instead of a mechanical (spinning) hard drive, you do not need to defragment it.
To run the defragmenter:
Click Start Image of the Windows Start icon. on the lower left of your Windows desktop.
In the search field, type defragment and press Enter.
On Windows 10.x and 8.x: Click Defragment and Optimize drives.
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