Introduction
In this article, we will learn how to activate Exchange Server 2019 by entering a product key. It will allow us to use Exchange Server beyond the trial period.
After successfully installing Exchange Server, you need to activate the license that you have purchased for either the Standard or Enterprise Edition. If you don’t enter the license key, your Exchange server will run in trial mode, which will last for 180 days.
Exchange Server 2019 Activation
We can activate Exchange Server 2019 by using the Exchange Admin Center (EAC) or Exchange Management Shell (EMS). We will use both methods.
Activate the Exchange Server by using the Exchange Admin Center
1. Login to EAC, go to servers > servers select the server that you want to active, then either click “Edit” or the “Enter Product Key“.

2. The Exchange Server properties window will open on a general tab. Enter the product key under the “Enter a valid product key” field and click Save.

3. After you successfully activated the Exchange Server, the next step is to restart the Microsoft Exchange Information Store service.
Go to run, type services.msc and hit enter.

4. The Services window will now open. Right-click the Microsoft Exchange Information Store and then click Restart.

Activate the Exchange Server by using the Exchange Management Shell
Open Exchange Management Shell with administrator privileges. Use the following syntax to enter the product key in the Exchange Management Shell.
Set-ExchangeServer <ServerName> -ProductKey <Product Key>
The following example will license the Exchange Server name EXCH2019.
Set-ExchangeServer EXCH2019 -ProductKey 01234-56789-01234-56789-01234
After you license the Exchange Server, restart the Microsoft Exchange Information Store service from the Exchange Management Shell by using the following command.
Restart-Service MSExchangeIS
Run the below command to verify that you have successfully licensed the Exchange Server.
Get-ExchangeServer | Format-Table -Auto Name,Edition,*Trial*
You can follow our article below on how to install Exchange Server 2019.
https://easytechhub.com/how-to-install-exchange-server-2019/
Conclusion
After the successful installation of Microsoft Exchange Server, it will provide a 180-day trial period. To use Exchange Server beyond the trial period, you have to purchase a license. In this article, we learned how to activate Exchange Server.