Windows 10: ASP .NET application hangs with IIS 8 and Windows server 2012 R2

Hello Microsoft Community ,I have an issue that i can't identify it from where it's happening , so let me introduce the issue in bullet points format :Am deploying a .NET Framework application , separated into frontend and backend part into iis in a windows 2012 server .The frontend part is communicating with backend via API's ; the frontend part is built using eviromnement to refer the backend like http://myapp.domain.com/api ... , so everything was running smoothly I tried to migrate to HTTPS for the endpoints ; so i made a new frontend build Angular that points to https://myap

:)

 

Convert Windows Server 2012 R2 Evaluation to Windows Server 2012 R2

I have purchased the product key of Windows Server 2012 R2. Now the server is on Windows Server 2012 R2 Evaluation. I found a few links there they explained on how to convert from Windows Server 2012 R2 Evaluation to Windows Server 2012 R2 with valid product
key. One of the example is this link:

How to activate Windows Server 2012 R2 Evaluation - Nicolas Ignoto, CTP

Is this a correct way to do? If I follow this step, will my data be erased?

I want to avoid formatting/fresh Windows install because there are some software in the server that we do not know how to backup. We just want to get it activated now, backup will be sorted out later.

 

Update .NET Framework version on Windows server 2012 R2

Hello,

I have the following scenario:

I have a Windows server 2012 R2 server with version 4.5.2 of the .NET Framework currently installed. I need to install two Windows services that were compiled with version 4.6.1 of the .NET Framework. Because the current version of the .NET Framework installed
on the server is earlier than the services I want to install, I am unable to run these new services on the server.

My question is: if I upgrade the .NET Framework on the server, to install the new services compiled with version 4.6.1, the services and applications currently installed on the server and running with version 4.5.2 will have any impact with this update?

 

from the application POINT OF VIEW IN GENERAL, will it effect if i update OS from windows server 2012 to windows server 2012 R2

My application is running in AWS (windows server 2012) and i want to update to windows server 2012 R2 so my question is from the application POINT OF VIEW IN GENERAL, will it effect to running application if i update OS from windows server 2012 to windows
server 2012 R2