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: You can use the free web versions of Word, Excel, and PowerPoint by pressing Ctrl + Shift + Win + Alt on your keyboard to open the Microsoft 365 portal .

: Open any Office app (like Word or Excel), go to File > Account , and select Change Product Key to enter your 25-digit code. : You can use the free web versions

To start the process, you need the official installer. While retail versions are typically tied to a Microsoft Account, volume license versions can be managed through specialized tools: While retail versions are typically tied to a

: For volume-licensed versions, Microsoft provides generic keys that allow the software to connect to a local KMS host for automatic activation. Example (Pro Plus 2019): NMMKJ-6RK4F-KMJVX-8D9MJ-6MWKP . 3. Ways to Use Office for Free Ways to Use Office for Free Once installed,

Once installed, you must activate the software to unlock all features.

: Some users activate volume versions via Command Prompt by connecting to a KMS server, though this is primarily for institutional environments. Using product keys with Microsoft 365