I already tried below steps:
Resolve FlexNet licensing errors when activating or opening Tableau Desktop
1. Verify the system date and time
2. Verify that the FlexNet Licensing Service is installed
3 Repair trusted storage
At this step I waited for 30 mins after I give the repair command
But it didn't end by itself. I had to abort it.
Also I am not able to launch versions other than 10.3 in my laptop
That issue occurs for a variety of reasons. If you haven't already, try the resolution steps in this article: Error "Licensing Check In Progress" Repeatedly Appears | Tableau Software You may need to work with your Network Administrator, if that isn't you, to whitelist the licensing service.
If none of that works, I would recommend opening a case with Support. They'll be your best resource to sort out the issue and get you back to exploring your data!
I raised a request with Tableau Support team and it is resolved now. Thanks for your reply
Hooray! So glad they were able to help get this resolved and you back to exploring your data!