4,660 questions
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Hello, This may be caused by the DNS lookup speed. Please check the DNS lookup speed. Also, try connecting to the Office 365 service via different DNS servers.
Why is connection via AD DNS slow when connecting to office 365?
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Gilbert G. Gitau
0
Reputation points
Connection via AD is sluggish when connecting to office 365, but okey when universal domain is added.
Windows for business Windows Client for IT Pros Networking Network connectivity and file sharing