I can't activate my Office key.

It is very important to check whether you already have an Office installation in place before activation. This can take different forms: a trial version of Office for example on a brand new PC/laptop, Office 365 or an older version such as Office 2016. To get started, first check and uninstall Office if necessary. Search the Windows search bar for "Office" and uninstall the app once you find it.

If you accidentally left Office uninstalled before trying to activate the "Office Key" and got an error message during installation, follow these steps for a solution:

• Uninstall the Office package as described earlier
• Go to your Microsoft account
• Go to 'Services and subscriptions' in the top menu
• Here you should see your purchased version of Office , with an option to install the software.

This way, you can successfully activate and use the Office software without any problems.