Access is denied Windows Installer message

Symptoms:

Message 'Access is denied' is displayed when installing a software.

Cause:

Where a message 'Access is denied' while installing any software appears, then Windows User Name used to log into Windows OS on the computer does not have sufficient permissions to install any software on that computer.

Solution:

Modify Windows User Access rights for the Windows User login to give Administrator rights to the Windows User on that computer. Or log into the computer with a Windows User Name that already has administrative permissions and then install the software.

How to check and modify Windows User Login rights and User Account Control (UAC) on Windows Vista, Windows 7 or Windows 8:

We recommend that you check the following settings on your computer for trouble free operation of the software on Windows Vista, Windows 7 or Windows 8 operating systems.

1. Windows User Login rights
   Your Windows Login User Account must have Windows User Access rights set as Administrator or Power User.
   http://support.microsoft.com/kb/2663817
   

2. Windows User Account Control (UAC) settings
   Guided Help: Adjust User Account Control settings in Windows 7 and Windows 8
   http://support.microsoft.com/kb/975787

   How User Account Control works
   https://docs.microsoft.com/en-us/windows/security/identity-protection/user-account-control/how-user-account-control-works

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