在计算机上安装Windows^(Windows)副本时，它会进入宽限期。这意味着人们可以使用Windows，而对其功能没有任何限制。如果您收到错误代码0xC004F009，则表示宽限期已过。完整的错误消息将显示为：

Error Code 0xC004F009, The Software Licensing Service reported that the grace period expired

造成这种情况的可能原因可能是宽限期在系统激活之前已过期，因此系统现在处于Notifications状态。

Windows 10激活错误 0xC004F009^{(Activation Error 0xC004F009)}

当涉及批量许可^(Licensing)时，此错误代码 0xC004F009 与 企业中启用 MAK 的计算机有关。原因之一是即使连接到Enterprise计算机也没有激活。第二个原因是系统从未与企业连接，并且在系统激活之前宽限期到期。发布此消息后， Windows^(Windows)的副本以缩减功能模式^{(Reduced Functionality Mode)}( RFM ) 运行。

0xC004F009，软件授权服务^{(Software Licensing Service)}报告宽限期已过

1]使用命令行工具激活Windows^{(Activate Windows)}

从IT 管理员^{(IT Admin)}处获取您的MAK密钥。

打开提升的命令提示符^{( elevated command prompt)}并运行以下命令以安装产品密钥或替换现有的：

Slmgr.vbs –ipk <your mak key>

然后键入以下内容并按 Enter：

slmgr.vbs –ato

这将在连接到Microsoft服务器后激活Windows 。

2]通过电话激活Windows

可以通过电话激活^(Phone)Windows。这在两种情况下有效——一种是消费者购买Windows密钥供个人使用，第二种是MAK密钥。它们都通过Windows 激活服务器^{(Windows Activation Servers)}。

您需要使用命令“ slui 4 ”获取安装 ID^{(Installation ID)}，然后到Microsoft 支持部门^{(Microsoft Support)}激活Windows on Phone 的副本。  但是，如果仍然无法正常工作，您可能需要重新安装服务器核心^{(Server Core)}来解决问题。

3]增加宽限期

可以延长宽限期，但之后您必须获得另一个正版Windows 密钥^{(Windows Key)}。可能有人向您出售了MAK密钥，而您没有激活它。由于MAK密钥没有被回收，因此已经超过了激活次数。以下是如何获得宽限期：

以管理员身份打开注册表编辑器并导航到以下键：^{(Registry Editor)}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\OOBE\mediabootinstall

将mediabootinstall^{(mediabootinstall)}的值更改 为0。

接下来，使用提升的权限笔命令提示符，然后键入以下内容并按 Enter：

slmgr -rearm

这将为您的激活添加宽限期，然后您可以重新启动计算机。

您最多只能重置 4 次激活期。在此之后，您将需要获得一个新密钥，并以通常的方式激活Windows 。

Activation error code 0xC004F009, The grace period expired

When a copy of Windows is installed on a computer, it gеts intо а grace period. It means that one can use Windows withоut any restriction on its feature. If you are receiving an error cоde 0xC004F009, it means that the grace period has expired. The complete error message will appear as:

Error Code 0xC004F009, The Software Licensing Service reported that the grace period expired

The possible cause for this could be that the grace period expired before the system was activated, as a result of which the system is in the Notifications state now.

Windows 10 Activation Error 0xC004F009

When it comes to Volume Licensing, this error code 0xC004F009 is related with MAK enabled computer in an enterprise. While one of the reason is that the computer wasn’t activated even though it was connected to the Enterprise. The second reason is when the system was never connected with the enterprise, and the grace period expired before the system is activated. Post this, the copy of Windows runs in Reduced Functionality Mode (RFM).

0xC004F009, The Software Licensing Service reported that the grace period expired

1] Activate Windows using the command-line tool

Obtain your MAK key from the IT Admin.

Open an elevated command prompt and run the following command to install the product key or replace the existing one:

Slmgr.vbs –ipk <your mak key>

Then type the following and hit Enter:

slmgr.vbs –ato

This will activate the Windows after connecting to Microsoft servers.

2] Activate Windows by phone

It is possible to activate Windows by Phone. This works in two cases –  one when Windows key bought by the consumer for personal use and the second is when it’s a MAK key. Both of them pass through Windows Activation Servers.

You will need to use the command “slui 4” to get the Installation ID, and then to Microsoft Support to activate the copy of Windows on Phone.  However, if it still doesn’t work, you may need to re-install the Server Core to resolve the issue.

3] Increase Grace Period

It is possible to increase the grace period, but you will have to get another genuine Windows Key after that. It is possible that somebody has sold you a MAK key, and you didn’t activate it. Since MAK keys are not recycled, the number of activation on this has exceeded already. Here is how you can get the grace period:

Open Registry Editor as an admin and navigate to the following key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\OOBE\mediabootinstall

Change the value of mediabootinstall to 0.

Next, pen command prompt with elevated privileges, and type the following and hit Enter:

slmgr -rearm

This will add the grace period to your activation, and then you can reboot your computer.

You can only reset the activation period up to 4 times. After this, you will need to get a new key, and activate Windows the usual way.

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