Check Access Speed

Assuming your environment link is [https://sample.dynamics.cn/main.aspx]

Append /tools/diagnostics/diag.aspx to the link, then visit.

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# Url sample
https://sample.dynamics.cn/tools/diagnostics/diag.aspx

Only after accessing will you see “Dynamics 365 Diagnostics”

Click Run and after a moment, the diagnostic results will appear.