How to check the activation key of Windows system on a computer？

Updated on February 18, 2025

---

1.Check the OA3 file

supported by some machines, but not by machines that have been reinstalled.

An OA3.txt file is added to the C drive, which contains the current machine’s SN and KEY. You can view the OA3.txt file to get the machine’s KEY.

---

2.Use system commands to check

May not be supported on machines with updated BIOS.The method cannot be used on systems with version 24H2 either.

• Open Command Prompt (CMD).On the system desktop, press the WIN+R keys.
  • 
• Type the command “wmic path softwarelicensingservice get OA3xOriginalProductKey” and press Enter.
  • 
• The displayed key is the one you need.

---

3.Check via PowerShell

May not be supported on machines with updated BIOS.

• Run PowerShell as administrator, enter the following command and press Enter:
• (Get-WmiObject -query ‘select * from SoftwareLicensingService’).OA3xOriginalProductKey
• This will display your Windows product key.

---

4.Contact GEEKOM customer service for inquiry.

Provide the SN number on the back of the device to customer service and wait for them to check.

---

Vielen Dank fürs Zuschauen. Wenn es irgendwelche Fehler gibt, sind Ihre Korrekturen willkommen.