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SL_E_CHPA_INVALID_BINDING
SL_E_CHPA_INVALID_BINDING (0xc004c002) is a Windows Software Licensing activation-service code. The key itself may have been read, but the activation service could not validate its binding to the current Windows installation or device. This can occur after an edition mismatch or a meaningful hardware/licensing-state change.
What to check
- Confirm that the installed Windows edition is the one licensed by the key or digital entitlement.
- Check activation status and retain the licensing details before changing the key.
- Use the Activation troubleshooter for a legitimate digital license after a hardware change.
Microsoft: help with activation errors
Microsoft: Slmgr.vbs activation options
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