--- title: "How do I add Microsoft Client Operating System OEM Licenses?" canonical: "https://ai-docs.certero.com/space/CUP/135430145/How%20do%20I%20add%20Microsoft%20Client%20Operating%20System%20OEM%20Licenses%3F" format: markdown --- ## 1. Overview > 1. You have purchased OEM licenses with hardware > 2. You are trying to add OEM licenses to Certero > 3. You cannot add an underlying Windows OS License as a volume license transaction > 4. Need to add the OEM license as a retail transaction > 5. They will then show up in Client Operating Systems > Compliance ## 2. Video Guide  ## 3. Step-By-Step Guide ### [Microsoft Licensing - Adding OEM OS Licenses](https://app.arcade.software/share/LBmZH8VCsZB6L4rSA4zl) ### 1. You have 0 Windows 10 Professional licenses in *Microsoft Licensing / Client Operating Systems*   ### 3. Go to *Microsoft Licensing / Retail Transactions*  ### 4. Click *New*  ### 5. Drop down *License Type*  ### 6. Click *Client Operating System*  ### 7. Drop down *Category*  ### 8. Find and select the OS *Category* required  ### 9. Drop down the *Version*  ### 10. Find and select the *Version* required  ### 11. Drop down the *Program Type*  ### 12. Find and select *OEM*  ### 13. Add the *Quanity*  ### 14. Input any required *Financial* details  ### 15. Drop down the main menu structure  ### 16. Find and select the *Microsoft Licensing / Client Operating Systems*  ### 17. View Compliance row for the selected *Category* 