Issue with Net Framework 3.5.1

[Pericles]

When I go to Control Panel - Programs - Turn Windows features on or off, Net Framework 3.5.1 does not have a checkmark. Upon expanding it, I find that

"Windows Communication Foundation HTTP Activation"
"Windows Communication Foundation HTTP non-Activation"

are by default unchecked for me. When I check them, I get the following message:

"An error has occurred. Not all of the features were successfully changed." When I click ok, I says it needs to restart to apply the changes. After restarting and going back to the same places, the above two boxes are still unchecked.

Any information as to why this might be and what can be done to ratify the situation would be most welcome. I need to open a program which requires Net Framework.

Thank you.

 

[ZeshanA]

When I go to Control Panel - Programs - Turn Windows features on or off, Net Framework 3.5.1 does not have a checkmark. Upon expanding it, I find that

"Windows Communication Foundation HTTP Activation"
"Windows Communication Foundation HTTP non-Activation"

are by default unchecked for me. When I check them, I get the following message:

"An error has occurred. Not all of the features were successfully changed." When I click ok, I says it needs to restart to apply the changes. After restarting and going back to the same places, the above two boxes are still unchecked.

Any information as to why this might be and what can be done to ratify the situation would be most welcome. I need to open a program which requires Net Framework.

Thank you.

Hi Pericles! Try uninstalling it and then installing it again from here: http://www.microsoft.com/downloads/...2f-5d1a-413d-8319-81da479ab0d7&displaylang=en

If that doesn't work .NET 4 has been released as a beta, try that here:Download details: .NET Framework 4 Beta 2

Please post your results,
Thanks,
ZeshanA

 

[meche]

I have this same problem.

When I tried to uninstall how you suggested it says to try to change it through the windows features window.

When trying to install the beta it seems to work, but in the windows features window it shows only 3.5 SP1 is still installed and not 4 beta.

So
-unsuccessful in uninstalling
-unsuccessful in installing 4 beta

This is a real annoying problem.