I used Media Creation tool to upgrade. My serial number is the same as RTM??

[Corvusco]

I have posted also on reddit but now it's crazy because you get a new post every second.

I have upgraded to Windows 10 on 2 PCs using the Media Creation tool and i didn't do a clean install, i selected to upgrade and to keep my files and apps so it is just like using the reserve method.
After installation i got this small software: ProduKey from nirsoft dot net
When i check the Serial Key for Windows 10 on my PCs they all end in 3V66T which is a generic Windows key. But both of them are activated.

This is present on 2 of the PCs i upgraded with Media Creation and the same serial number is present on my laptop which has the Insider Preview version and my other Intel NUC where i have a different user

What serial number do you have? How did you install Windows 10? Reserve or Media Creation?

 

[Draganta]

I have the same serial yes (can see the ending in properties of My computer). How are we supposed to do a clean install?

 

[maevinj]

I'm having the same issue.

 

[cygnus11]

I have the same serial yes (can see the ending in properties of My computer). How are we supposed to do a clean install?

How are you seeing the ending in properties of My Computer? Are you talking about the System properties from the Control Panel? I don't see any product key on that page, but I see a Product ID.

 

[tbhCKR]

I've got the same key on build 10240 upgraded from Windows 7 Pro on my Lenovo ThinkPad X230.
Regarding clean install I found this: lifehacker[dot]com/how-to-do-a-clean-install-of-windows-10-1720775893
I don't really trust it and I have no idea what's going to happen when I want to upgrade my SSD in August 2016. Do I have to reinstall Windows 7? Will I be able to install Windows 10 again on that SSD?

 

[Draganta]

How are you seeing the ending in properties of My Computer? Are you talking about the System properties from the Control Panel? I don't see any product key on that page, but I see a Product ID.

I see the last characters only in the window to activate it, and it is 3V66T. I never used any beta of Windows 10 on my pc or an RTM or something, this is the first time. Why do many people have this serial too?

 

[kingbobyjr]

I also have 3V66T on my SP2 and PC also. Hmm....they must be tying activation/product key to your MS account...no?

 

[a5cent]

For everyone here with this problem:

1) Under Settings / Update & Security / Activation , does it say "Windows is Activated"?
2) Under Settings / Accounts / Your Account , does it say you are signed in to your verified Microsoft Account?
3) Open an elevated command prompt and type "sfc /scannow". Does that confirm that your system is in a consistent state?

 

[kingbobyjr]

For everyone here with this problem:

1) Under Settings / Update & Security / Activation , does it say "Windows is Activated"?
2) Under Settings / Accounts / Your Account , does it say you are signed in to your verified Microsoft Account?
3) Open an elevated command prompt and type "sfc /scannow". Does that confirm that your system is in a consistent state?

1) Yes...Activated
2) Yes...signed into my MS account
3) sfc found no issues

 

[a5cent]

^ Well then, everything is as it should be.

We don't understand why Windows has chosen to locally store generic keys rather than the upgraded keys, but there is nothing wrong with your installation.

 

[Grumpy yorkie]

It is a generic key for all. The id's of the components in your pc are kept at Microsoft and they are used to validate if you reinstall.