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Daybreak
Error code

0x8007007B

DNS name does not exist.
WindowsKMS clientChecked 2026-10-20
Official message
Microsoft original
0x8007007B DNS name does not exist.

What this means

The client looked up the KMS host in DNS and got no result. The words mean the name does not exist, not that the network is down.

Common causes

  • The device is not on the organization network, so it cannot resolve internal DNS records.
  • The KMS SRV record is missing or misconfigured.
  • The host name configured on the client is misspelled.
Do this first

Check the current network, and compare the KMS host name shown by slmgr /dlv.

What to do next

  1. 1Connect to the organization network or a VPN, then try again.
  2. 2Ask IT to check the KMS SRV record in DNS.
Continue diagnosis from this code

Take what you know into the KMS diagnosis. It will ask a few more questions to narrow this down.

Start the diagnosis

Sources

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About this data
The meaning and the original message come from the documents listed above. The same error code can have more than one cause. This site gives an order of checks. It does not decide your exact situation from the code alone.
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