Hi EstebanF82,
By my understanding, you deploy Skype for business server 2015 in organization, instead of public Skype client. If that, try to configure SFB profile on the fresh PC, then check if the issue
persist, and
Did this issue occur for all users?
Could you give us any snapshots for this issue?
Is the meeting invite sent from internal organization? Or external organization?
Best Regards,
Jim Xu
TechNet Community Support
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