Windows 10: I reinstalled Server 2012 R2 on my Dell PowerEdge T320 and it wont let me activate using my...

I reinstalled Server 2012 R2 on my Dell PowerEdge T320 and it wont let me activate using my original product key? I reinstalled Server 2012 on a new ssd due to my computer getting hit by some ransomware, but now when I try to activate it just prompts me that the key is invalid.

:)

 

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.

 

Activate server 2012 r2

I have a windows server 2012 r2 which will not activete with any of three new keys nor will it activate usin slui 4 procedureI have a windows server 2012 r2 which will not activete with any of three new keys nor will it activate usin slui 4 procedure

 

My Windows Server 2012 R2 Product key is not activating after reinstallation of my HP Server

My Windows Server 2012 R2 Product key is not activating after reinstallation of my HP Server