Sign in to Office.com/setup with your Microsoft account. Enter the 25-character code, and then select Next.

For Phone Activation key (Office 2021 Professional Plus Cd Key Global Phone activation )

1. Enter the product key you received from us to activate the software.
Select the “Activate by Phone” option.

2. Call the phone number provided in the activation guidelines.

3. Follow the instructions in the voice message during the call.

For more detailed instructions, please visit the link on the “How to Activate” button.
English: https://officecdn.microsoft.com/pr/492350f6-3a01-4f97-b9c0-c7c6ddf67d60/media/en-us/ProPlus2021Retail.img

Microsoft office 2016 Pro Plus Retail ISO
Retail requires the official installer:
https://officecdn.microsoft.com/pr/492350f6-3a01-4f97-b9c0-c7c6ddf67d60/media/en-US/ProPlusRetail.img
After launching the application, you’ll be prompted to use the code provided by us.

Important note: Microsoft product keys often require activation during a clean installation of Windows. If a different operating system or Windows edition is already installed, some key types may not work or may fail to activate.

For Microsoft windows please note the License code is for 1 PC.

Office 2021 , office 2016, office 2019 can be activated only via ISO files and buyers must use Phone activation for Office.

Windows 11 pro
Windows 10 pro
windows 10 home
windows 11 home

If buyer for example bought windows 10 home, he must install windows 10 home
sometimes buyers has another installed version (bought 10 pro, but installed 10 home for example) => key will not work
=> it is not correct. buyer must reinstall windows system.

The key can not upgrade system from PRO to HOME , and from HOME to PRO

Important note: Microsoft product keys often require activation during a clean installation of Windows. If a different operating system or Windows edition is already installed, some key types may not work or may fail to activate.