Problem: When you download and install Windows Server 2008 R2 (with or without SP1) 180 days trial software, it prompts for activation within 10 days of installation by default. So how does one activate the trial for 180 days as specified by Microsoft?
Step 1: Install Windows Server 2008 R2 (with or without SP1) 180 days trail software.
Step 2: After a successful installation, when “Configure your Server” windows opens, click on Activate Windows or open Windows Activation.
Step 3: At the “Enter the Product Key” leave the Product Key field blank and click ‘Next’.
Step 4: Click Yes on the Confirmation Dialog box. The wizard connects to the Windows Activation service and shows “Activation was successful” messege as shown below: