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When updating group policy, user update ok, but machine policy failed.


When running gpupdate, I received this error

User Policy update has completed successfully. 

Computer policy could not be updated successfully. 
The following errors were encountered: The processing of Group Policy failed. 
Windows could not authenticate to the Active Directory service on a domain controller. (LDAP Bind function call failed). Look in the details tab for error code and description.

Turns out, I had an old hosts entry.  Removing the host entry fixed the problem. 

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