Installing .Net Framework 3.5 on Windows 8 - Error 0x800F081F

When you try to install .Net Framework 3.5 on Windows 8 you will receive the error 0x800F081F, the origin of the problem is that the sources files needed for this feature are not present on the C:\Windows\WinSxS folder of your operating system.
As you can see on the following picture only the source files for .NET 4.5 are present :

 
To resolve this issue you have to use the Windows 8 installation media and form the command line run the following command to install the .Net Framework 3.5 feature :

dism /online /enable-feature /featurename:NetFx3 /All /Source:<Path> /LimitAccess

Where <Path> is <Drive Letter>:\Sources\SXS and <Drive Letter> is the driver letter associated to your Windows Installation media.  

  
     
 

How To : Enable Remote Desktop Connections by GPO

As the number of servers you administer growth you have to automate some administration action that you should perform each time you have a new server on your domain.
To enable automatically the remote desktop connections on any server you add to your domain you have just to create a new GPO and relate it to your servers organizational unit.

• Create a new Group Policy Object and Edit it 

• Expand  Computer Configuration ==> Administrative Templates ==> Network ==> Network Connections ==> Windows Firewall ==> Domain Profile 

• Enable the rule Windows Firewall : Allow inbound Remote Desktop exception

• Expand  Computer Configuration ==> Administrative Templates ==> Windows Components   ==> Remote Desktop Services ==> Remote Desktop Session Host ==> Connections 

• Enable the setting Allow users to connect remotely by using Remote Desktop Services

• Link the new GPO created to your servers Organizational Unit

Update the GPO configuration of your servers and all administrators accounts will be authorized to open remote session on the servers.