Hi Jitender Kumar Rohilla,
Yes, agree with others.
As a supplement, you could use the method in the following link to migrate the users to the SFB online
https://infrahouse.wordpress.com/2015/10/28/lync-2010-hybrid-configuration-with-skype-for-business-online/
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make
sure that you completely understand the risk before retrieving any suggestions from the above link.
Best regards,
Alice Wang
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact tnmff@microsoft.com.
Alice Wang
TechNet Community Support
