Hello there,
Do you have product key or is it digital licence?
If you have the key try this,
Step 1: Open the Settings app.
Step 2: Click Update & security.
Step 3: Click Activation.
Step 4: Click Change product key and then enter your 25-character Windows product key and then click the Next button. Make sure that your PC is connected to the internet while clicking the Next button.
Have you created any restore points before the update?
The Windows Activation Troubleshooter will help you address the most commonly encountered activation issues on Genuine Windows devices.
Hope this resolves your Query !!
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