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I already Installed Microsoft .Net Framework 4.5 in Windows Server 2012 Release Candidate Data Center using Features. but When i started to install SharePoint 2013 then it gives following error.

Setup is unable to proceed due to the following error(s): This product requires Microsoft .Net Framework 4.5

if I am trying to reinstall then it show that its already installed.

any solution for this error..?

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2 Answers 2

Probably you have an older version of .Net 4.5. Try to install the newest one.

http://blogbaris.blogspot.ch/2013/08/sharepoint-2013-installation-endless.html

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try removing .net 4.5

install your server

performe updates

install iis

install .net 4.5

http://download.microsoft.com/download/b/a/4/ba4a7e71-2906-4b2d-a0e1-80cf16844f5f/dotnetfx45_full_x86_x64.exe

run Prerequisite.exe

http://msdn.microsoft.com/en-gb/library/h4k032e1.aspx

for offline

http://social.technet.microsoft.com/wiki/contents/articles/14582.install-sharepoint-2013-prerequisites-offline-or-manually-on-windows-server-2012-a-comprehensive-guide.aspx

what server are you running?

EDIT

uninstalling 4.5 also removes 4.0 so you would need to re-install 4.0

http://msdn.microsoft.com/en-us/library/5a4x27ek(v=vs.110).aspx

re-installing 4.0 and then 4.5 will work! also make sure you have the correct version to what os you have, be it RC or RTM OS version you would also need the correlating RC or RTM .net version :) , this is becomming a well known issue with .net 4 + , Also how did you uninstall it?

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I recommended that never try to remove Framework 4.5 from your system (Window Server 2012) because after removing it the explorer.exe will be lost and Operating System may corrupt. –  Vikalp Kapadiya Mar 11 '13 at 4:22
    
updated my answer –  ali Sharepoint Mar 11 '13 at 9:07

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