Please follow the below steps to fix the issue.
Please use the below link to uninstall the product.
Restart the computer.
Please have registry backup and make the below changes
Rename the "McAfee" key to"McAfee Old" under HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
Create a new key under HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\ and name it McAfee (gotopermission window and give full permission to the current user)
Create a new key under HKEY_LOCAL_MACHINE\SOFTWARE\ and name it McAfee (goto permissionwindow and give full permission to the current user)
Restart the computer
Please use the Silent installation method for installation.
1. Open the webpage www.mcafeesaas.comand login with your security center.
2. Click on utilities on the top
3. Under the installation tab, select the second option silent installation to download.
4. Save the vssetup.exe file to your c:drive.
5. Now click start --> type cmd.exe into the search field.
6. Then Right-click on cmd.exe andclick “Run as administrator” to open the command prompt.
Type cd\ (enter)
6.Copy this command and paste
VSSETUP.EXE /CK=CompanyKey /P=VFB
Where P is the parameter and V is thevirus scan, F the firewall and B the browser protection. If you want to exclude installation of any software you need to omit that parameter from the above command.
Just wait for 5 minutes McAfee will be automatically get installed in your computer.