How KMS servers work

To check the remaining time in your current evaluation period, you can use the script "Slmgr. vbs" in the System32 folder, which can be run using the-dli switch. The specific method is as follows:
1. Click Start and run the command prompt as an administrator.
2. Type slmgr. vbs-dli, and then press ENTER to check the current status of your evaluation period. At this time, the system will display the remaining time of the evaluation period, that is, the number of days that can be used when you say it is not activated, and whether the system can be activated through kms. Such as 650) this. width = 650; "title =" 26.png" src = "http://www.bkjia.com/uploads/allimg/131227/1I12563T-0.png"/>

If the following information is displayed, KMS cannot be used for activation in the retail version.

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After a Windows Server 2008 R2 operating system is installed, there should be a 30-day evaluation period, which is called Initial Grace by Microsoft ),

During this period, you can still use the system even if it is not activated. After the evaluation period ends, activation prompts are frequently mandatory, and the desktop of the machine is black. Many important updates cannot be installed before the system is activated.
It should be 57 days on the Internet, which is not an accurate statement. I did a further investigation and got the Windows Server
2008 R2 activation principle:

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The figure shows that the operating system can use up to 120 days without using the activation code. After the system is installed, the system enters the initial Grace state, which is 30d. You can extend the evaluation period when the system expires. The specific method is as follows:
1. Click start, and then click the command prompt.
2. To reset to the evaluation period, type the command slmgr. vbs-rearm and press ENTER.
3. restart the computer.

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