Inquiry Regarding Offline Activation for Office Home & Business 2021 (PC/Mac, 1 Device)_Retail

Question

We purchased the relevant product and completed the following steps: product purchase → installation on a PC → account creation → product key activation.

The product has been used in a closed (offline) network environment for approximately one year. Recently, an activation request/notification has appeared.

We would like to inquire whether there is a way to complete activation without connecting the PC to the Internet, as the system must remain in a closed network environment.

Thank you for your assistance.

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Moved from: <Microsoft 365 and Office | Excel | For business | Windows>

Answer 1

To activate Office Home & Business 2021 in a closed network environment without connecting to the Internet, you can use the Multiple Activation Key (MAK) method. This method allows you to activate Office products offline by obtaining a confirmation ID through a phone call to Microsoft. Here are the general steps you would follow:

1. Obtain the Installation ID: When prompted for activation, select the option to activate by phone. This will provide you with an Installation ID.
2. Contact Microsoft: Call the Microsoft activation center using the phone number provided during the activation process. Provide them with your Installation ID.
3. Receive Confirmation ID: After verifying your information, the representative will give you a Confirmation ID.
4. Complete Activation: Enter the Confirmation ID into the activation dialog in Office to complete the activation process.

This method allows you to activate Office without needing an Internet connection, making it suitable for your closed network environment.

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References:

• Overview of volume activation of Office
• Use the Volume Activation Management Tool

Answer 2

Hello 성욱 정,

Thank you for posting on Microsoft Q&A forum

I understand you wish to find a way to activate Office Home & Business 2021 offline without using internet.

Full offline activation is not supported for Office version such as Office Home & Business 2021. This version must be activated online, because the license is tied to a Microsoft Account and must be validated on Microsoft’s servers. Offline activation via phone is also not available for this version.

In conclusion, Office Home & Business 2021 (Retail) cannot be fully activated offline, it requires an Internet connection both for the initial activation and for periodic re activation, which is why your device is now requesting activation again after one year. You best option now is to briefly connect to the internet for activation.

If you need further assistance, feel free reply back to this post. I'll be happy to assist you.