asked on

Why dotnet framework 3.5 setup failed?

This is using MS Windows 2012 r2 server. Dot net framework 4.0 is setup by the developer. However, they also demand dot net framework 3.5 to be install. So, I went to the server manager > roles and features, and then follow the wizard with attempt to get it installed. The setup failed even I select to point the source to the w2k12 r2 cd, why?

Thanks in advance.

Seth Simmons

go to programs and features -> show installed updates
see if KB2966826, KB2966827, KB2966828 are installed
if they are, uninstall and try .net framwork install again
it is known to prevent .net 3.5 from being installed

MichaelBalack

ASKER

Hi Seth,

Just checked, the above 3 updates not installed.

Chris

Not sure why it failed but the way I had to get it installed on a Win8.1 Pro was to installed from the Install CD.

DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /LimitAccess /Source:d:\sources\sxs

Change the drive letter to match your CDROM

This should also work for Server 2012.

MichaelBalack

ASKER

Hi Chris,

Try the dism command, same result - failed at 65.9%

ASKER CERTIFIED SOLUTION

MichaelBalack

membership

This solution is only available to members.

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

Start Free Trial

Steve

its an odd issue with this version of server I think.

add the role/feature and look at the bottom of the wizard for an option something like 'specify alternative source'
enter <cdrom>:\sources\sxs (eg d:\sources\sxs) and give it a go. should work fine.

MichaelBalack

ASKER

It works