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why i can connect with FQDN but not IP address?

mehmet erdogan 1 Reputation point
2020-08-07T06:08:12.447+00:00

I have Windows server 2012 as a DC, and 50 clients everything works fine but sometimes, some clients can't connect to file server with IP address, but with FQDN. also sometimes i can't connect to a remote desktop with IP address but it works with FQDN. this is not a persistent problem but every day it happens to some clients. nothing is changed on DNS...

Windows DHCP
Windows DHCP
Windows: A family of Microsoft operating systems that run across personal computers, tablets, laptops, phones, internet of things devices, self-contained mixed reality headsets, large collaboration screens, and other devices.DHCP: Dynamic Host Configuration Protocol (DHCP). A communications protocol that lets network administrators manage centrally and automate the assignment of Internet Protocol (IP) addresses in an organization's network.
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  1. Candy Luo 12,661 Reputation points Microsoft Vendor
    2020-08-07T07:51:36.55+00:00

    Hi ,

    Before going further, I would appreciate your help in clarifying the following situations:

    Please first run "nslookup" and type in the server FQDN. Then check the IP address what you get back is correct. It would be helpful for us to identify the problem if you could upload the results.

    Note: since this is a public forum, everyone could view your information, please remove private information that might leak your privacy.

    >> some clients can't connect to file server with IP address, but with FQDN.

    What's the error message when you can't connect to file server with IP address ? Please post the detailed error message for us to troubleshooting.

    Could you ping the server IP address when you can't connect to file server with IP address ? If you can ping the server IP successfully, this is might not be a network problem.

    Here is similar thread discussed before, you could have a look:

    https://community.spiceworks.com/topic/1993990-cannot-access-file-server-by-ip-but-can-by-dns-name?page=1

    Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.

    ---Please Accept as answer if the reply is helpful---

    Best Regards,

    Candy

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