"Directory service is busy" error when you rename a domain-joined computer on a Windows Server 2012 R2 DC

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Symptoms

This issue occurs when the following conditions are true:

A Windows Server 2012 R2 domain controller services the rename operation.
The Service Principal Name (SPN) that's registered by Microsoft SQL Server or Microsoft SQL Express contains non-numeric characters after the ":" delimiter in the SPN attribute of the computer account that's being renamed.

Note A rename operation that uses the rename-computer PowerShell cmdlet also fails with the same error.

The NETSETUP.log logs status code 0x200e, as follows:

NetpChangeMachineName: from 'ComputerName' to 'NewComputerName' using 'dc1.contoso.com\administrator' [0x2]
NetpDsGetDcName: trying to find DC in domain 'CONTOSO', flags: 0x1010
NetpDsGetDcName: found DC '\\DC1' in the specified domain
NetpChangeMachineName: status of connecting to dc '\\DC1': 0x0
NetpGetLsaPrimaryDomain: status: 0x0
NetpManageMachineAccountWithSid: status of NetUserSetInfo on '\\DC1' for 'ComputerName': 0x200e

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Cause

This issue occurs because Active Directory Domain Services (AD DS) expects there to be a port number after the ":" delimiter. Therefore, SPN validation fails.

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