Hi Alceryes,
As you said, presence information is one of the primary functionalities for Skype for Business. Based on my research, I did not find the reg entry for the presence information, and users get the information about other’s presence from the SFB Online. It seems
we could not disable SFB presence for now.
In addition, you could post your feedback in the following link:
https://www.skypefeedback.com/, Microsoft will improve MS products based on the feedback and hope this problem will be solved in the near future.
Best Regards,
Evan Jiang
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