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Third-party firewalls or VPNs are blocking communication with Microsoft activation servers.
The result code 0xc03f6601 fundamentally indicates a communication failure, a corrupted digital license, or a conflict between your local operating system and the Microsoft activation servers.
If you're still having issues, could you tell me is giving you this error, and if you are using a corporate device ? This will help me give you more precise steps. Subscription activation Issues and the Windows Store API This will help me give you more precise steps
For Game Pass users, the 0xc03f6601 code heavily correlates to a broken Windows Gaming Services infrastructure. Reinstalling it via administrative commands often forces the license to re-register.
If you're using a digital license (often called a "digital entitlement"), link it to your Microsoft account. This makes it much easier to reactivate Windows after a hardware change. Go to and sign in with a Microsoft account instead of a local account. This ties your license to your account, not just your hardware. If you're using a digital license (often called
Wait for the empty Store app window to close and reopen automatically.
Scroll to find , right-click it, and select Restart . 4. Sign Out and Re-sign Into the Microsoft Store it will reject new license installations.
Logging into different Microsoft accounts on the Xbox App and the Microsoft Store can cause digital rights management (DRM) conflicts.
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The Client License Service ( ClipSVC ) manages infrastructure for the Microsoft Store and subscription activation. If its database becomes corrupted, it will reject new license installations. Open as an Administrator. Stop the licensing service by executing: net stop clipsvc Use code with caution.