Hi yy Leo Chen,
I am Dave, I will help you with this.
There is nothing you can do, you will need to contact the IT Department in your School and ask them to fix that error and activate Windows for you, they control the key management server that would be used to activate your Windows licence
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Power to the Developer!
MSI GV72 - 17.3", i7-8750H (Hex Core), 32GB DDR4, 4GB GeForce GTX 1050 Ti, 256GB NVMe M2, 2TB HDD
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