X80004005 error validating windows
Sad to add - many well-known experts of Windows across the internet now rate this Cumulative update as more of a joke than a practical fix -
At my end: 1) One of the PCs I updated without waiting for Microsoft permission is still asking me to activate my copy of Windows 10 even after I successfully installed KB3081424 with no issues.2) I also installed the same cumulative update on a new OEM Dell Windows 10 installed with no issues. I have had beaucoup issues with W10 after upgrading my PCs; did the upgrade (unfortunately), and did the refresh, then a reset on all of them due to issue with black screen, and programs not reloading, etc.
A networking problem has occurred while activating your copy of Windows.
(Error code: 0x C004FC03) This activation error occurs when your PC is not connected to the Internet, or the firewall settings on your PC is preventing Windows from finishing the activation process online.
Have you upgraded to Windows 10 and not able to explore all features because of activation errors?
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In case if there are no support persons in your organization you may want to enter your product key again by following these steps: A security error occurred.
(Error code: 0x80072F8F) You might see this activation error if your computer’s date and time are set incorrectly or Windows is having trouble connecting to online activation service failing to verify your product key.
Learn what this activation error means, common Windows 10 activation errors and how to fix them below.
If you upgrade to Windows 10, the new OS will take the product key and activation details from your earlier OS.
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(Error code: 0x C004E003) You might see the above activation error after installing some third-party software that could have changed the system files.