Hi @YE Ming Cheng ,
It's unclear from your question what your setup involves, which operation you are trying to perform, and what you have tried to resolve this error. The error message "User credentials does not have permission to perform this operation. The account used for this test must have network logon privileges for this machine's domain" indicates that you do not have sufficient privileges to perform whichever operation you are trying to perform.
You need to make sure that you are logging on with Domain Administrator credentials.
If you are executing a command on the machine, make sure that you are running the command from an elevated command prompt. To open an elevated command prompt, click Start, right-click Command Prompt, and then click Run as administrator.
If you have already confirmed that you are using the correct credentials, please try the following tests to verify connectivity:
- Verify that both DCs can ping each other.
- Try shutting down the DC2. Then reboot DC1 and start DC2 again.
Let me know if this helps and if you have further questions.
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