Solution to activating the Windows after the server mainboard is replaced

To activate Windows, do as follows:
1. Call 800-830-1832 or 400-830-1832, and press 1 and then 5. Provide the key of your Windows version and the code generated when the activation failed.
2. Call the Microsoft technical support and tell the technical support that you need to reactivate the OS after replacing the server mainboard.
3. Enter the code provided by the Microsoft technical support to activate the OS.

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