當嘗試啟動Windows 的時候遇到以下的錯誤訊息：

08004FE92

這個問題發生的主要原因有幾個：

1. 使用了不正確的KMS Client Key連線到 KMS Server嘗試做啟動。
2. KMS Client Count 不足以啟動KMS Service。
3. KMS Server遭遇連線錯誤導致無法成功啟動。

遇到這個問題，可以嘗試以下的幾個做法：

• 選擇正確的KMS Client KEY：

where KmsSetupKey is one of the setup keys shown Following table. After installing the KMS setup key, activate the KMS client by running cscript slmgr.vbs /ato.

KMS Client Setup Keys

Operating System Edition	Product Key
Windows 7
Windows 7 Professional	FJ82H-XT6CR-J8D7P-XQJJ2-GPDD4
Windows 7 Professional N	MRPKT-YTG23-K7D7T-X2JMM-QY7MG
Windows 7 Enterprise	33PXH-7Y6KF-2VJC9-XBBR8-HVTHH
Windows 7 Enterprise N	YDRBP-3D83W-TY26F-D46B2-XCKRJ
Windows 7 Enterprise E	C29WB-22CC8-VJ326-GHFJW-H9DH4
Windows Server 2008 R2
Windows Server 2008 R2 HPC Edition	FKJQ8-TMCVP-FRMR7-4WR42-3JCD7
Windows Server 2008 R2 Datacenter	74YFP-3QFB3-KQT8W-PMXWJ-7M648
Windows Server 2008 R2 Enterprise	489J6-VHDMP-X63PK-3K798-CPX3Y
Windows Server 2008 R2 for Itanium-Based Systems	GT63C-RJFQ3-4GMB6-BRFB9-CB83V
Windows Server 2008 R2 Standard	YC6KT-GKW9T-YTKYR-T4X34-R7VHC
Windows Web Server 2008 R2	6TPJF-RBVHG-WBW2R-86QPH-6RTM4

Converting Retail Editions to Volume Activation

Retail editions of Windows 7 Professional and Windows Server 2008 R2 can be converted to KMS clients, provided that the organization has acquired the appropriate volume licenses and conforms to the Product Use Rights. To convert Windows 7 Professional and all editions of Windows Server 2008 R2 from retail to a KMS client, skip the Product Key page during operating system installation. When installation is complete, open an elevated Command Prompt window and type:

Slmgr.vbs /ipk <SetupKey>

where SetupKey is the KMS client setup key from Table 4 that corresponds to the edition of Windows 7 or Windows Server 2008 R2.

• 請確認啟動Count一定要足夠，Server SKU 需要最少5個Count才能啟動，Client SKU需要最少25個Count才能啟動。
• KMS Server本身可以連上Internet 服務。