Activation Failed

Since activation failed after the Windows update, capture the message and hexadecimal error code in Settings > System > Activation; the code determines the fix. Confirm the PC is online, its date and time are correct, and the installed edition matches the license you own, such as Home versus Pro. Sign in with the Microsoft account linked to the device’s digital license and run the Activation troubleshooter from that page as an administrator. If the troubleshooter detects a license for another edition, follow its edition-specific guidance rather than buying another key. If hardware was recently replaced, choose the option indicating that hardware changed and select this device. For a work-managed or volume-licensed PC, connect to the organization’s network and contact its administrator. Do not remove the Windows update or purchase a new license yet. If activation still fails, post the error code, Windows edition, and the build shown by winver.