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SL_E_SRV_SERVER_PONG
SL_E_SRV_SERVER_PONG (0xc004b007) is a Windows Software Licensing activation-service code. This is a connectivity-related activation error. The activation workflow received a server-side response indicating that the client could not complete the connection to the activation service.
What to check
- Confirm that the computer has working Internet access and the correct system date and time.
- Check whether a proxy, TLS inspection device, firewall, or restricted network blocks the activation workflow.
- For a KMS-managed device, confirm it can reach the organization network and use the correct KMS configuration.
Microsoft: help with activation errors
Microsoft: troubleshoot KMS activation
Microsoft: Slmgr.vbs activation options
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