How much time does 2008 give you to activate?

Windows Server 2008 gives you 30 days to activate the OS. If you change hardware on the physical server, Windows may require re-activation. You will get 3 days for this activation grace period. For those with evaluation copies, your grace period is 60 days. You can re-arm the grace period by following the procedure below.

1. Click Start, and then click Command Prompt.

2. Type slmgr.vbs -dli, and then press ENTER to check the current status of your evaluation period.

3. To reset the evaluation period, type slmgr.vbs –rearm, and then press ENTER.

4. Restart the computer.

http://support.microsoft.com/kb/948472

http://www.microsoft.com/windowsserver2008/en/us/r2-product-activation.aspx

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