Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Server 2012 R2:  .NET framework does not work

Posted on 2016-09-06
4
Medium Priority
?
60 Views
Last Modified: 2016-09-07
Hi,

I am facing issues with .NET framework 2 or possibly 3.5
A production RDP server showed THOUSANDS of app crashes after the installation of a static database (phonebook-style) on friday.  Administration tools such as PowerShell, Server Manager or certain Snap-Ins for MMC cannot be started.  The machine boots just fine and runs applications such as Office or browsers without complaint.  Eventlog cannot be opened.

Support of the presumably offending applications shrugs off all help.  No issues are known.  Support of Datev, a popular and complex German bookkeeping software suite sais only that .NET framework seems to be damaged, which I already knew.  

I am finding many tools to download, install and repair .NET framework, but none of them seem to apply to Server 2012 R2, where .NET framework is a feature of the OS and is not installed from downloads.

Is there anything I can do other than reinstall?  No backup, unfortunately.

Thanks,
Ralph
0
Comment
Question by:Ralph Scharping
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 34

Accepted Solution

by:
it_saige earned 1000 total points
ID: 41786608
Server 2012 R2 has both .NET 3.5 and .NET 4.5.1 as features of the operating system.  Reinstalling .NET 3.5 is fairly straightforward:

http://www.danielclasson.com/install-net-framework-35-server-2012/
http://blog.dbi-services.com/winows-server-2012-r2-failed-to-install-net-framework-35/

.NET 4.5.1, on the other hand, presents a problem when trying to reinstall as the Windows Graphical Interface is directly depended upon it.  So if you need to reinstall .NET 4.5 you will need to use the following instructions in order to reinstall the .NET 4.5.1 framework:

https://blogs.technet.microsoft.com/askcore/2014/04/24/removing-net-framework-4-54-5-1-removes-windows-20122012r2-ui-and-other-features/

-saige-
0
 
LVL 2

Author Comment

by:Ralph Scharping
ID: 41786779
Well... as I said above, I cannot open the server manager...
0
 
LVL 34

Expert Comment

by:it_saige
ID: 41786984
The first link provides a command line method to install the .NET 3.5 framework as does this technet article:

https://technet.microsoft.com/en-us/library/dn482069.aspx

Most links found provide both a command line method as well as the gui method because not all instances of Server 2012 are running the GUI, take server core for instance.

-saige-
0
 
LVL 2

Author Closing Comment

by:Ralph Scharping
ID: 41787336
The command-line tool seems to use the same things "under the hood" that are failing in the GUI.  Anyway - I got nowhere and reinstalled the machine.
Thanks anyway.
0

Featured Post

Get your Disaster Recovery as a Service basics

Disaster Recovery as a Service is one go-to solution that revolutionizes DR planning. Implementing DRaaS could be an efficient process, easily accessible to non-DR experts. Learn about monitoring, testing, executing failovers and failbacks to ensure a "healthy" DR environment.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Resolve DNS query failed errors for Exchange
The article shows the basic steps of integrating an HTML theme template into an ASP.NET MVC project
In this Micro Tutorial viewers will learn how they can get their files copied out from their unbootable system without need to use recovery services. As an example non-bootable Windows 2012R2 installation is used which has boot problems.
This tutorial will walk an individual through the steps necessary to join and promote the first Windows Server 2012 domain controller into an Active Directory environment running on Windows Server 2008. Determine the location of the FSMO roles by lo…

722 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question