The OEM key is typically tied or fixed to the motherboard of a specific computer. This means that even if you format or reinstall Windows, you won’t need to enter the key again, However, if you upgrade the motherboard or if it gets damaged, you’ll need to purchase a new OEM key.

A Retail key can be linked to your Microsoft account, offering greater flexibility. This means if you upgrade your hardware, you can still use the same key. In contrast to an OEM key, a Retail key allows for more adaptability with hardware changes.

To resolve this issue, please perform a complete format of your HDD/SSD and Reinstall a fresh copy of Windows. During this process, refrain from using the same Microsoft account.

Instead, Create a New Microsoft account with a new mobile number or email ID. This will enable the product key to link with your new Microsoft account and facilitate easy activation of Windows in the future, requiring only a login if you need to format or reinstall.

Note: Don't enter the key during installation to avoid hardware change errors, All Enter the key after Complete Installation

Open the search box and type Activation Settings. Then click on Change Key and paste or type your product key to activate Windows. Ensure you have a working internet connection during this process.

1) Uninstall any existing Microsoft Office package and restart your PC.

2) Visit setup.office.com.

3) Sign in with your Microsoft account or create a new one (e.g., abc@outlook.com, abc@hotmail.com, abc@gmail.com).

4) Enter your product key.

5) Download the Office software.

6) Install the downloaded Office package.

7) Open any app like Word or Excel, sign in with the same Microsoft account, and you're all set!

• Bind Key: A Bind Key allows you to link the license to your Microsoft account, offers lifetime activation, and can be reused for multiple downloads, installations, and activations. It provides flexibility, as it can be activated as many times as needed for a lifetime.

• Online Key: A Digital License is also a lifetime license but cannot be linked to your Microsoft account. It can only be used once for activation and cannot be reused or transferred after the initial activation.

Yes, it can be used even after formatting or reinstalling Windows. Since it's a digital license, you don't need to enter the key each time you format or reinstall.

Simply log in with the same Microsoft account during the setup of the newly installed Windows, and it will automatically Activated.