asked on

Install .NET 3.5 onto aServer 2012 New Build Fails

I have just built a new MIS server which has Server 2012 installed and no other features. By default .NET 4.5 feature is installed and enabled. I have just installed SQL 2012 and need to enable/install SQL Server Management Tools but I'm getting an error saying that .NET 3.5 needs to be installed first.

I have tried installing .NET 3.5, and uninstall 4.5 to allow 3.5 on but recommendations strongly say not to uninstall .NET 4.5.

All I need to do is 'Add' the 'Management Tools - Basic & Complete' via the SQL Server 2012 Setup

When I try and Add .NET 3.5 via 'Add Roles and Features Wizard' I get the following message:
""Installation of one or more roles, role services, or features failed.
The source files could not be found. Try installing the roles, role services, or features again in a
new Add Roles and Features Wizard session...........

And I can't disable .NET 4.5 as the check boxes are greyed out.

Any advice helpful

ASKER CERTIFIED SOLUTION

Cliff Galiher

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

CTCRM

ASKER

Damn, can't believe it, I have already unchecked .NET 4.5 and when RDP'ing back onto the server it seems to authenticate but I now just have a blank desktop with no icons nor taskbar etc. How do I get round this?

With regards to SSMS tools, via Powershell I tried to enable the feature pointing locally to c:\sources\sxs and also used the /All switch but was presented with an error saying that the source filed could not be found. As the source files were packaged into an ISO I extracted a copy of the Sources\sxs directory and pasted locally on the server (C:\) but still getting the same error in Powershell and the same error when Adding Roles & Features UI.

Cliff Galiher

I'd plan on reinstalling the server at this point. Sounds like you've done enough tinkering to break things in a very unsupported way. Reinstall. Enable 3.5 using the original media as a source. Then patch and install desired applications. Since you "just built" this server (from your original post) this will be faster than attempting a repair which may not even be complete. And remember, don't disable 4.5 next time.

Seth Simmons

i agree; start over and install all the features and roles you will need before patching
there have been many posts from folks having issues with .net 3.5 on 2012 because of either updates installed first that end up breaking the component or something else already installed

CTCRM

ASKER

Guys, The reason for me getting the errors when trying to locate the sources\sxs is because I was pointing to a non R2 setup disk so looking wrong files in the wrong location.
All fixed now and SQL2012 is functional on Server 2012, time to hand it over.....