Power BI Gateway Connectivity Issue - Assistance Needed

Hi, tharunkumarRTK ,thanks for your concern about this issue.

Your answer is excellent!
And I would like to share some additional solutions below.
Hello,manoj_0911 . I am glad to help you.
Have you tried logging in and registering the gateway using a Power BI Service account?
Generally registering the gateway using a Power BI Service account does not cause this account error issue.

I used my Power BI Service account to create the gateway

Regarding the time issue, please check your relevant settings.
Make sure that the system time of your server or computer is synchronised with the Internet time. You can synchronise the time through the ‘Date and Time’ setting.
Check and make sure that the time zone is set correctly. Incorrect time zone settings may cause the time to be out of sync.
I hope the following issue will be helpful to you:
Install an on-premises data gateway | Microsoft Learn
Solved: Gateway Accounts - Microsoft Fabric Community
azure active directory - How can I change the service account on the on-premise data gateway without getting the error "Service account or password is incorrect"? - Stack Overflow

I hope my suggestions give you good ideas, if you have any more questions, please clarify in a follow-up reply.
Best Regards,
Carson Jian,
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