License Install Failed For License Type: 1 Result Code: 0xc03f6601 〈90% Tested〉

Unhide and clear residual tokens by executing the built-in renewal command: rundll32_cliprenew.dll,ClipRenew Use code with caution.

cd %ProgramFiles%\Microsoft Office\root\Licenses16\

: Subscription activation relies heavily on the Windows Store API backend. If this communication is blocked, the ClipRenew scheduled task cannot generate the required client license token.

: Common in environments where a device is trying to upgrade to Windows Enterprise via an Intune or Microsoft 365 subscription but cannot reach the required activation endpoint.

Sometimes, the files that store your Windows license information become corrupted. This can happen due to improper system shutdowns, malware infections, or errors in the Windows Registry. Unhide and clear residual tokens by executing the

Right-click the Start button and select or Windows PowerShell (Admin) .

System file corruption can prevent Windows from writing files to protected secure storage areas. Running built-in repair tools often patches these gaps.

Follow these steps in order to resolve the issue.

Scroll down and click . If that doesn't work, return to this menu and click Reset (Note: Resetting will require you to log back into the app). 6. Fix Account and Profile Mismatch : Common in environments where a device is

How to Fix Windows Activation Error 0xC03F6601 Windows activation errors can disrupt your workflow. One specific error message found in the Windows Event Viewer or command-line activation tools is: license install failed for license type: 1 result code: 0xc03f6601 .

: Modern enterprise provisioning requires the device to pass MFA checks. If a conditional access policy restricts token retrieval, the registry key generation fails, rejecting the upgrade to Enterprise.

Let the scan complete. It will report whether any corrupted files were found and repaired.

If you are trying to upgrade from Pro to Enterprise via a subscription, a second reboot Right-click the Start button and select or Windows

Restart your computer and attempt to activate or update the app again. Summary Checklist Run wsreset.exe : Sign out/in of Store: Reset clipsvc :

After performing these steps, verify your activation status: Go to > System > Activation .

First, uninstall the current product key. Type this command and press Enter:

If the error occurs while trying to download apps or activate a subscription: Activation troubleshooting - Windows 10 Help Forums