I also ran into this trouble spot one day when I was installing SharePoint 2013 for a client.
Setup is unable to proceed due to the following error(s): This product requires Microsoft .Net Framework 4.5
So you need to check which version of .NET framework is installed on the server :
• Set-Location 'HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Client'
• Get-ItemProperty -Path . | Select-Object Version
Then depending on the version installed and the OS you're using, you need to uninstall the corresponding KB :
.NET Framework 4.6.1 : https://support.microsoft.com/en-us/kb/3102436
- Windows 8 ou Windows Server 2012 : KB3102439
- Windows 8.1 or Windows Server 2012 R2 : KB3102467
- Windows 10 : KB3102495
.NET Framework 4.6 : https://support.microsoft.com/fr-fr/kb/3045560
- Windows 8 or Windows Server 2012 : KB3045562
- Windows 8.1 or Windows Server 2012 R2 : KB3045563