License Install Failed For License Type: 1 Result Code: 0xc03f6601 -

Encountering the error is a common yet frustrating roadblock when attempting to activate Microsoft products, particularly Windows Server (especially RDS CALs) or certain Volume Licensing editions of Windows 10/11.

This error generally indicates that the Windows License Management Service or the Microsoft Store API cannot properly communicate with Microsoft’s activation servers to install or renew a license, particularly during subscription-based activations (like Enterprise or Education) or when accessing the Windows Store.

Restart your computer and attempt to activate or update the app again. Summary Checklist Run wsreset.exe : Sign out/in of Store: Reset clipsvc : Encountering the error is a common yet frustrating

If this error appears in your Event Viewer or as a popup, try these standard repairs first: : Press Win + R to open the Run dialog. Type wsreset.exe and press Enter .

Observe the License Status. If it is stuck on "Notification" or "Extended Grace," the token store is likely locked or empty. Summary Checklist Run wsreset

Run as Administrator:

Alternatively, use an :

Open the app. Click your profile icon in the top right and ensure your primary purchasing account is signed in.