After Remove License Key with slmgr /upk still Can Recovery Back license key?

 

after remove license key with slmgr /upk still can recovery back license key?

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Yes, you can typically recover or restore your Windows license after running

slmgr /upk (uninstall product key), as the command only removes the key from the active operating system. 

Recovery depends on your original license type: 

1. OEM (Pre-installed) Licenses 

If your computer came with Windows from the factory (Dell, HP, etc.), the key is embedded in the motherboard's BIOS/UEFI firmware. The /upk command does not erase this hardware-level key. 

• How to recover: Open Command Prompt as Administrator and run:
  wmic path softwarelicensingservice get OA3xOriginalProductKey.
• To Reactivate: Restarting the computer or clicking "Troubleshoot" in Settings > System > Activation often triggers Windows to find this hardware key and reactivate automatically. 

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2. Digital Licenses (Linked to Microsoft Account) 

For Windows 10 or 11, if your license is linked to your Microsoft Account, it is stored on Microsoft's servers rather than just as a local key. 

• How to recover: You do not need the physical 25-character key. Sign in to your Microsoft Account on the PC, then go to Settings > System > Activation and use the Activation Troubleshooter. 

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3. Retail Licenses (Bought separately)

If you bought a retail box or a digital key from a store, slmgr /upk removes it from the software environment. 

• Digital Purchase: Check your Microsoft Account Order History or the confirmation email from your purchase to find the 25-character key.
• Third-Party Tools: Before restarting or reinstalling, tools like ShowKeyPlus (available on the Microsoft Store) or NirSoft ProduKey may still be able to retrieve key fragments from the registry or firmware. 

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Summary of Important Commands

• slmgr /dlv: Check your current license status and identify the "Licensing channel" (OEM, Retail, or Volume).
• slmgr /ipk <Your-Key>: If you found your key, use this command to reinstall it manually.
• slmgr /ato: Use this to force Windows to attempt online activation after reinstalling a key.