Office thì dùng CMD nhập key và kích hoạt, hoặc đọc topic tự kích hoạt xem cách làm.
Nhờ bác xem giúp mã lỗi trả về như bên dưới
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LICENSE NAME: Office 19, Office19ProPlus2019VL_KMS_Client_AE edition
ERROR CODE: 0xC004F04D
ERROR DESCRIPTION: The Software Licensing Service determined that the Installation ID (IID) or the Confirmation ID (CID) is invalid.
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C:\Program Files\Microsoft Office\Office16>cscript ospp.vbs /act
Microsoft (R) Windows Script Host Version 5.812
Copyright (C) Microsoft Corporation. All rights reserved.
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Installed product key detected - attempting to activate the following product:
SKU ID: 85dd8b5f-eaa4-4af3-a628-cce9e77c9a03
LICENSE NAME: Office 19, Office19ProPlus2019VL_KMS_Client_AE edition
LICENSE DESCRIPTION: Office 19, VOLUME_KMSCLIENT channel
Last 5 characters of installed product key: 6MWKP
ERROR CODE: 0x8007007B
ERROR DESCRIPTION: Run the following: cscript ospp.vbs /ddescr:0x8007007B
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C:\Program Files\Microsoft Office\Office16>