Assalamu'alaikum wr wb
This time I will give tips on how to activate windows server 2019 using powershell windows.
Follow the steps below:
first open the START MENU
Then select SERVER MANAGER
Then select TOOLS
Then choose WINDOWS POWERSHELL
After that you type slmgr / upk
Then type slmgr / ipk (SPACE PRODUCT KEY xxxxx-xxxxx-xxxxx-xxxxx-xxxxx)
Then type slmgr / ato
Finished
Enjoy !!