O/S: Windows 2008 R2 EE When I tried to install CAS role. this message was displayed: Client Access Role Prerequisites Failed Error: Install hotfix Microsoft Knowledge Base article 982867 from http://code.msdn.microsoft.com/KB982867. Click here for help... http://technet.microsoft.com/en-US/library/ms.exch.err.default(EXCHG.141).aspx?v=14.1.218.11&e=ms.exch.err.Ex28883C&l=0&cl=cp I went to that link and I could not find a hotfix for windows 2008 R2. So I downloaded the one for Windows 7 as the closest (Windows6.1-KB982867-v2-x64) But I am not able to install it it says "this update is not applicable to this computer" Can anyone provide the exact link to install this prerequisite?

Hi Make sure you don't have missed anything else as well http://technet.microsoft.com/en-us/library/bb691354.aspx Give the server a reboot and then try the file again, Win 6.1 should work for both Win7/Windows 2008R2 Jonas Andersson MCTS: Microsoft Exchange Server 2007/2010 | MCITP: EMA 2007/2010 | MCSE/MCSA Blog: http://www.testlabs.se/blog

is this exchange 2010 sp1 ? sp1 GUI gives you the option to to install the Pre-requisites automatically Dhruv

Hi tchnetjohnny, Windows6.1-KB982867-v2-x64 is the right one. Sometimes I met the same issue as yours. Please restart the server as Jonas said to try again. Frank Wang TechNet Subscriber Support in forum If you have any feedback on our support, please contact tngfb@microsoft.com Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

I agree with Frank, i have also seen it with few of my clients I am sure you are installing the below component Machine generated alternative text: [ Windc,ws6.1-KB982867-v2-ia64.msu (Win7) runtime binary. 2810K, uploaded Jun 22 2010 - 1812 downloads http://code.msdn.microsoft.com/KB982867/Release/ProjectReleases.aspx?ReleaseId=4520 Dhruvraj, "sp1 GUI gives you the option to to install the Pre-requisites automatically" - It will only install Windows requirement not the exchange. Gulab | Skype: gulab.mallah

I agree with Frank, i have also seen it with few of my clients I am sure you are installing the below component Machine generated alternative text: [ Windc,ws6.1-KB982867-v2-ia64.msu (Win7) runtime binary. 2810K, uploaded Jun 22 2010 - 1812 downloads http://code.msdn.microsoft.com/KB982867/Release/ProjectReleases.aspx?ReleaseId=4520 Dhruvraj, "sp1 GUI gives you the option to to install the Pre-requisites automatically" - It will only install Windows requirement not the exchange. Gulab | Skype: gulab.mallah

Thanks for your replies. FYI, the issue was that I needed to install the .NET 3.5 framework first. It is resolved now John