Microsoft Support on Twitter: "@ictrltx Hello! Error code 0xC004C003 occurs when the product code associated with the device isn't valid. We suggest following the steps given in this article that can help
Windows Activation Error 0xc004c003, 0xC004C060, 0x803f7001, 0x800704cF, 0xC004F212, 0xC004F034 : Electronic First
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0xc004c003 — решаем проблему 8 способами
![Solved!] Error code: 0xc004c003 | DiskInternals](https://cdn.diskinternals.com/media/thumbs/400w_media_en_products_partition-recovery_cmd-slmgr-vbs.png.webp "Solved!] Error code: 0xc004c003 | DiskInternals")
Solved!] Error code: 0xc004c003 | DiskInternals
Error 0xC004C003 Upgrading from Windows 10 Home to Windows Pro failed - Microsoft Community
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Microsoft shares workaround for 0xc004c003 Windows 10 activation errors
Fix: Windows Activation error 0xC004C003
Solved: Windows 8 Reinstall, Error code: 0xC004C003 - HP Support Community - 5976764
4 Methods to Fix Windows 10 Activation Error 0xC004C003
Windows 10 Home Activation Error 0xC004C003 and 0x803fa067 - Microsoft Community
Fixing Windows Activation Error 0xC004C003
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Error Code 0xc004c003 on Windows 11: Fixed
Error code: 0xC004C003 Activation key has been blocked. - HP Support Community - 8241220
KB5001692: Windows Activation fails with error 0xc004c003 on devices which have installed the Windows 10 January 2021 nonsecurity preview release or a later version - Microsoft Support
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Windows Activation Error 0xc004c003, 0xC004C060, 0x803f7001, 0x800704cF, 0xC004F212, 0xC004F034 : Electronic First
0xC004C003, Activation server determined the product key is blocked
![HWID] Can't activate windows 10 Pro 19042.1288 (0xC004C003) · Issue #79 · massgravel/Microsoft-Activation-Scripts · GitHub](https://user-images.githubusercontent.com/69117518/137400641-efdd7c4b-c2b1-4dcf-9919-dca539728e9b.png "HWID] Can't activate windows 10 Pro 19042.1288 (0xC004C003) · Issue #79 · massgravel/Microsoft-Activation-Scripts · GitHub")
HWID] Can't activate windows 10 Pro 19042.1288 (0xC004C003) · Issue #79 · massgravel/Microsoft-Activation-Scripts · GitHub
How to Fix Windows 11 Activation Error 0xC004C003? (4 Ways)
