Microsoft SQL Server 2012 Setup Error When Enabling NetFx3 With Error Code: -2146498298

Installing SQL Server 2012 on Windows Server2012 for SharePoint2013.

"The following error has occurred:

Error while enabling Windows feature: NetFx3, Error Code: -2146498298, Please try enabling Windows feature: NetFx3 from Windows management tools and then run setup again. For more information on how to enable Windows features, see http://go.microsoft.com/fwlink/?linkid=227143"

To fix manually install/enable dotNet3.5 feature.

 

Now retry the SQL setup.

Nintex Workflow 2010 Installation Failed with Access Denied for My Computer Zone

When attempting to install NintexWorkflow2010 for the SharePoint2010 Contoso farm on WindowsServer2008 the installation was failing, with 'Access denied' to the 'MyComputer' assembly zone.

This error was due to the UAC (User Account Control) being enabled for the administrator account that the installation was running under.

The fix:

1. Log into the SharePoint Application Server
2. Open up Control Panel,
3. Go to User Accounts
4. Click on the ‘Change User Account Control settings’ link.
5. Move the slider down to 'Never notify'
6. Click ‘Ok’
7. Click 'Yes'

Now you can repair the Nintex installation, this time it should install successfully.

Once done set the UAC back to what it was.