Windows 10 doesnt activate after upgrading with USB installation media

Ok, It did activate the upgrade after about 30 mins, but now I have another problem.

I did a clean install now it well not activate and it has been about 24hrs. Any solution to this problem?

On Windows 7 since I would not be upgrading from I Microsoft account should I wait until the end of the process( Win 10 clean install is activated) or the beginning( during setup of Win 10 Upgrade) to link my Microsoft account?

Borg 386 said:

You might want to roll back to the previous OS version, do a direct upgrade this time with the media creation tool & give it a day or 2 before you do a clean install.

Some info on activation as well as upgrading & clean installing:

Activate Windows 10 - Windows 10 Forums

Windows 10 - Upgrade Installation - Windows 10 Forums

Windows 10 - Clean Install - Windows 10 Forums

https://www.tenforums.com/tutorials/4...s-windows.html

Hey guys I have an update for you. I was having problems with my clean install activating as well even after I made sure that the upgrade activated. So I went back to Windows 7 and then I restarted the whole process and now its working. In both stages, upgrade and clean install, it was already activated when I checked it. It has been a couple of days since I've done it and it has not been revoked or any thing.

Heres what I did, I'm not sure if anything I did here made a difference but the end result was good:

1. Rolled back to Windows 7, in my case I had cloned my permanent drive to a temporary one before starting the upgrade process.

2. Checked for and removed device from Microsoft account. When I checked my Microsoft account the computer showed up twice, I removed them both.

3. Upgrade to Windows 10:
Before doing this I uninstalled my antivirus.
I upgraded by using USB installation media that I created using the Media Creation Tool. I launched the Setup application from file explorer.
During the upgrade process I choose to NOT to do updates, NOT keep anything and did not link my Microsoft account(stayed with local).
When the upgrade was done, I checked activation and it had already activated.

4. Clean install Windows 10: I
I started my clean install 30secs after seeing the upgrade had activated, have seen some posts saying to wait a couple days even at this stage to insure clean install activates.
I started clean install by booting from the same USB installation media I used to upgrade.
During install I choose to clear all existing partitions and again NOT do updates or link my Microsoft account.
When clean install was done, I checked activation and it had already activated, then I linked my Microsoft account.

Microsoft also admitted yesterday or the day before that they had problems with their activation servers and would have it fixed within 48 hrs. Your activation problems may have gone away because Microsoft fixed their servers.

I contacted Microsoft yesterday as I have the same error and same steps on clean install (Win8.1 --> upgrade to 10, confirmed activated -> clean install --> error). They IM Chat from the MS tech support person indicated to wait another 24 hours as it was a known issue. Error code: 0xC004C003

I upgraded on Aug 4th and it wouldn't activate so I can't do the clean install, on the 6th I called they said it would take another 24 hours and now it's the 9th. I've lost a little faith in them now same code as well. Error code: 0xC004C003