Windows 10 21H2 Activated WITHOUT contacting Microsoft!

Had something weird happen just after a Windows 10 installation, and I'm wondering if it has happed to anyone else. Windows activated as soon as I entered my Product Key, but I was NOT connected to the internet. Here's how it happened:

1.) Downloaded a fresh 21H2 ISO directly from Microsoft.

2.) Used (a paid-for, registered copy of) NtLite to ONLY do the following: Trim all editions exept Pro, Download and integrate the latest updates specific to version 21H2, add the local Administrator account, disable the initializatoin of automatic updates, downloads, activation, etc. on first start-up, and very little else. I added nor removed no other components, drivers, or installers. (I did NOT enter the Product Key to be integrated by NtLite into the install files!)

3.) Used Rufus to create a bootable USB drive from which to install Windows.

4.) Removed the original M.2 SSD from the computer, added a brand new, never used M.2 SSD to the computer and installed the NtLite'd Windows 10.

5.) Started up the computer with the fresh install and added the Product Key via the "Change the key" link on the "About" screen within Window's "Settings."

6.) Then I went to the "Activation Settings" screen in order to activate Windows (after which I has planned on using NtLite to thoroughly gut the live install of Windows, removing such nuisances as Microsoft Store, Updates, Security Center, Metro Apps, Edge, etc, etc.) [Normally, I'd simply run "slui.exe 4" in order to activate by phone. Its how I'd activated Windows every single time before this. But last time, the automated system rejected my attempt and patched me over to a Customer Service rep with whom I got into an argument about my version of Windows. He kept telling me that my Windows product key had been used before and that I had to buy Windows again. I told him he was mistaken, because my version of Windows was a full retail version that could be migrated to a new system, but that it didn't matter anyway, since I was reinstalling it on the same and only system it had ever been installed on. Finally, after he started screaming at me, I just hung up the phone on the guy, and called right back. This time the automated sytem activated without any issues. But, this most recent time, I thought I'd try activation by internet, just to avoid the potential hassle.]

So, after clicking on the Activatin Settings tab, to my complete surprise, it stated "Windows is activated with a digital license." Mind you, I used NtLite to disable Windows from automatically starting the activation routine. Further, the computer had not been and was not connected to the internet during any of this process. No ethernet cable to my router. No connection via Wifi, at least none where I'd signed in to any connections; plus I didn't even have the wifi antenna connected to the motherboard. There's no public hotspots around me, only neighbors routers and they're all secured! Yet, there it was. Windows was mysteriously activated!

Since then, I've used the computer as normal, accessing the internet, and the system has remained "activated," and its never prompted me to activate Windows. So, what gives? How did this system activate? Do you think Microsoft has added a "white-list" of known, good Product keys in its installers that automatically activate when entered? How else could this have happened? Anybody have a clue?

Thanks!
 
Yeah, I was thinking of doing that.
I always do it whether im installing linux or windows. With windows Setup will search everywhere for an answer file and if it finds more than one and they have conflicting entries Setup becomes confused, say you have w7 and w10 answer files, setup just looks for autounattend.xml, not w7autounattend.xml or w10autounattend.xml, and it will fail.
 
Yeah, I was thinking of doing that. I still have the jump drive unchanged from when I installed Windows. I'll disconnect everything except for C:\ drive, wipe it, reinstall from the same source, and see what happens. Will update here once I get around to doing that. (May be a few days.)

i would do the same install to confirm this activation is happening everytime before doing that change. or you won't be sure. so you need 2 fresh install 1 with no change first. then with drives removed. btw when u remove drive, windows may remove your hwid license since hardware is changed so you may end up unlicensed anyway. soooo that test might not help you. but if i were you i would definitely do fresh install without changing anything first to see if it is happening again.
 
Again, replacing drives on an existing system doesn't trigger re-activation. What does is moving a system disk to a new PC, and booting off the new hardware.

https://win10.guru/windows-10-digital-license-explained/

Hardware IDs​

Let’s start with the hardware ID (HWID). For Windows 10 computers, Microsoft has 15 different HWID values, from HWID 0 to HWID 14 (source):

– HardwareID-0: Manufacturer + Family + Product Name + SKU Number + BIOS Vendor + BIOS Version + BIOS Major Release + BIOS Minor Release
– HardwareID-1: Manufacturer + Family + Product Name + BIOS Vendor + BIOS Version + BIOS Major Release + BIOS Minor Release
– HardwareID-2: Manufacturer + Product Name + BIOS Vendor + BIOS Version + BIOS Major Release + BIOS Minor Release
– HardwareID-3: Manufacturer + Family + Product Name + SKU Number + Baseboard Manufacturer + Baseboard Product
– HardwareID-4: Manufacturer + Family + Product Name + SKU Number
– HardwareID-5: Manufacturer + Family + Product Name
– HardwareID-6: Manufacturer + SKU Number + Baseboard Manufacturer + Baseboard Product
– HardwareID-7: Manufacturer + SKU Number
– HardwareID-8: Manufacturer + Product Name + Baseboard Manufacturer + Baseboard Product
– HardwareID-9: Manufacturer + Product Name
– HardwareID-10: Manufacturer + Family + Baseboard Manufacturer + Baseboard Product
– HardwareID-11: Manufacturer + Family
– HardwareID-12: Manufacturer + Enclosure Type
– HardwareID-13: Manufacturer + Baseboard Manufacturer + Baseboard Product
– HardwareID-14: Manufacturer

The Windows 10 Digital License is based on HWID 3. As long as the Windows edition, motherboard and CPU remain the same, once the computer has been activated, all future clean installs on that computer also will activate automatically. Note that all HWIDs exclude storage media entirely. Thus, on a PC with Windows 10 activated, you can replace its storage (HDD / SSD) devices with one or more new ones and clean install Windows 10 on a new disk. Even so, the PC will activate automatically based on that machine’s existing digital license.

The Windows 10 digital License is edition but not bit architecture or language specific. In other words, you can replace an activated 32-bit Swedish Windows 10 Pro edition by clean installing a 64-bit French Windows 10 Pro. It will still activate automatically, because of its existing Digital License.
 
Again, replacing drives on an existing system doesn't trigger re-activation. What does is moving a system disk to a new PC, and booting off the new hardware.

https://win10.guru/windows-10-digital-license-explained/
But, still, Windows should have to connect over the internet in order to "automatically" activate, right? In other words, the storage of the affirmed HWID would be on MS's remote servers and not in the generic ISO, requiring it to connect before it could recongnize the previously approved HWID, no?
 
Unplug all but the intended C:\ drive. Fresh format the install media drive. Id say get a dos drive wiper on the whole C: drive.
 
Windows has Software Protection Platform (SPP) for anti-piracy, it's a background service which checks Windows (and Office) for activation status. After it connects online and matches your HW signature, or sees your MS account's digital license, SPP blesses your PC.

Disabling SPP makes Windows think something's wrong, and it goes into degraded mode. "Reduced features."

Once a PC self-activates, it never needs to be online ever again. SPP already has that data locally.
 
Well, its the damnedest thing. Using the same, unaltered install source as before, I reinstalled everything just as I had before. Didn't change a thing as far as I know. Now it says "Unable to reach Windows activation servers." So, it did not automatically activate this time without an internet connection. I don't know. I'm starting to second guess myself now. But I was absolutely sure that I did not plug in the ethernet cable until well after I had saw that it was already activated. That's why I plugged in the cable, anyways, to do an internet search to see if there'd been any changes to the way MS activates the stuff. In any case, I'm stuck now with the install as I would've expected, which is prompting me to connect to the internet to activate. I'm sorry for leading you all on a wild goose chase. It certainly wasn't my intention. But, I do appreciate everyone who has responded for your efforts and for being courteous in the process. If it happens again AND I'm sure of the circumstances, I'll post the details. Thanks, and I will consider this thread to be concluded.
 
Windows has Software Protection Platform (SPP) for anti-piracy, it's a background service which checks Windows (and Office) for activation status. After it connects online and matches your HW signature, or sees your MS account's digital license, SPP blesses your PC.

Disabling SPP makes Windows think something's wrong, and it goes into degraded mode. "Reduced features."

Once a PC self-activates, it never needs to be online ever again. SPP already has that data locally.

do you know which services i should block to prevent hwid digital license? i'm currently digital licensed i want to actually block it next time after fresh install... for some reasons. (always using local account and make my installs offline all the time)
 
If you blocked SPP, then Windows can only be activated by phone menu. Which means you're providing the hwid hash anyway.
You can do offline installations, SPP just needs a connection within the next 30 days.

There's tips on disabling SPP, but they mostly apply to KMS activations (Enterprise, not Home/Pro).
 
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