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Windows 10 free update deactivated itself


So, im not happy about that fact, Windows 10 deactivated itself. I can still use it but that big fat watermark in the bottom right corner is really annoying. So my question is: Is there a way to reactivate it? When trying to use some Windows activators it most times says: "TAP Adapter fail" or something like that. Is there a way btw a key that may actually work? If really nothing helps (I would like to keep my data cause i have lots of gigs of games installed) is it possible to install a new version of Windows 10 without loosing data of C and D drive? (Picture)

 

Did you try entering keys from the windows you upgraded from ?

Did you try entering keys from the windows you upgraded from ?
Well, I bought a already build together PC. The problem is that there is no windows key that came with it. Just the recovery CD...

Could be OEM version.

Well, I bought a already build together PC. The problem is that there is no windows key that came with it. Just the recovery CD...
Have you tried contacting the shop where you bought the PC from?

Well, I bought a already build together PC. The problem is that there is no windows key that came with it. Just the recovery CD...
Run showkeyplus from this forum. It will tell you all available Windows keys on the system, including the Product Key that was present before the upgrade (for in place upgrades) and keys stored in bios:
Solved Showkey - Windows 10 blog

Also, if you post here what versions showkey plus says the different keys are for, maybe we can figure out what happened with activation.

Run showkeyplus from this forum. It will tell you all available Windows keys on the system, including the Product Key that was present before the upgrade (for in place upgrades) and keys stored in bios:
Solved Showkey - Windows 10 blog

Also, if you post here what versions showkey plus says the different keys are for, maybe we can figure out what happened with activation.
I tried to reactivate windows with the key my pc came with... (OEM Key)

I get fail code: 0xc004e016

I tried to reactivate windows with the key my pc came with... (OEM Key)

I get fail code: 0xc004e016
Some pages about that code: 0xc004e016 at DuckDuckGo

From an elevated command prompt ("run as administrator" command prompt) type slmgr /dlv

Post the results here and we might be able to figure something out. Your initial post says, "When trying to use some Windows activators it most times says: "TAP Adapter fail" or something like that." That sounds like some illegal activation server is attempting to be used.

From an elevated command prompt ("run as administrator" command prompt) type slmgr /dlv

Post the results here and we might be able to figure something out. Your initial post says, "When trying to use some Windows activators it most times says: "TAP Adapter fail" or something like that." That sounds like some illegal activation server is attempting to be used.
Google Translate result:

Software licensing service version: 10.0.10240.16384
Name Windows (R) Enterprise Edition
Description: Windows (R) Operating System, VOLUME_KIVISCLIENT channel
Activation ID: 73111121-5638-40f6-BC11-************
Application ID: 55c92734-d682-4d71-983e-d6ec3f16059f
Advanced PID: 03612-03290-000-000003-03-1031-10240.0000-3252015
Product Key Channel: VolumeGVLK
Installation ID: 35941207877380802927275072344691824614116697603748119**********
Partial product key: 2YT43
License Status: Notification
Notification Reason: licC004F056.
Remaining Windows rearm Number: 1001
Remaining Windows rearm Number: 1001
Trusted Time 11/21/2015 09:13:29
Configured activation type: IONS Use to update to activate and update KMS client information "slmgr.vbs / ato" the values.

Windows 10 free update deactivated itself