It seems that with the new Dynamics 365 CRM Online, there is been a pop up coming so often with the following URL “www.crmdynint.com”, the pop up keeps coming every few minutes and was really annoying to the point to investigate the source of this issue.
The pop up was related to the Learning Path functionality. To resolve the pop-up behavior you will need to open CRM Online and on the Options cog on the top right, and select the “Opt out of Learning Path” and then that pop up will stop.
The following screen shot will guide you the location for Opting out of the Learning Path functionality.
That resolved for me! Hope will help you resolve the pop ups for you.