A few Days back , I was working on Installing SCORCH on Windows 2012 box . As a Prerequisite I had to Install .NEt Framework 3.5 on the server and While I tried to Install it using Server Manager it gave me Error Every time ( As Shown Below ) 

 

.NEt Framework not Getting Installted on Windows 2012 and Windows 2012 R2

.NEt Framework not Getting Installted on Windows 2012 and Windows 2012 R2

 

After a little thought process I found this Solution to the problem .

Enter the Windows 2012 Disc and then Enter the Following Command as an Admin ( You Might get an Error if you try to Execute the Command Using Normal User stating that Elevated User Rights are Required )

 

dism /online /enable-feature /featurename:NetFX3 /all /Source:drive Name :\sources\sxs /LimitAccess

The Drive Name should be the Name of the Drive where you Windows CD is :

After you execute the command :

DISM Execution

 

Now , ON the Ass Server Roles Window Click on Specify an Alternate Source Path and then Enter the same path there (drive Name :\sources\sxs )

 

Install the .NET Framework 3.5 and the issue is solved .

 

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