Skype for Business 2019 on Premise DNS issues

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Hii I have a problem when log in skype for business, the error code kb2566790



I have tried this troubleshoot on this link (, add SRV record and CNAME record on my DNS server but still cannot log in SFB. But when I change my computer with DNS google I can log in. It seems like my DNS has a problem. Can someone help me with this? I really appreciate someone helps me with this.


i have read this post that similar to my problem but I don't really understand it.

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