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0xC004C008
Fix 0xC004C008 when a Windows key reached its limit
Windows error 0xC004C008 means that a product key has reached its permitted activation count. It is a licence-management question, not a reason to seek an unofficial activation workaround.
Review where the licence is used
List the devices associated with the purchase and check the licence terms. A retail key may be transferable in some circumstances, while OEM and organisation licences follow different rules.
Retire an old device through the proper channel
If you replaced a computer, remove it from your Microsoft account where appropriate and keep the old device record. Do not try to activate multiple active machines with a licence intended for one device.
Escalate with proof of purchase
Contact Microsoft or the authorised seller with the receipt and a concise explanation of the hardware change. They can tell you whether the licence can be transferred or whether another licence is required.
Recommended next steps
- Review the licence terms and the devices linked to the purchase.
- Remove or deactivate old devices only through the legitimate account or vendor process.
- Contact the original seller or Microsoft Support with your order details.
- Avoid buying replacement keys from unverified marketplaces.
Frequently asked questions
Can I activate two PCs with one retail key?
Only if the licence terms expressly permit it; most consumer licences are for one active device.
Will a reset reduce the activation count?
No. The licence service, not a local reset, controls activation limits.