Double clicking an application doesn't open it

[Rudra]

In Windows 8 simply double clicking an application would open it but after upgrading it to Windows 10, the application doesn't start up unfolds it's opened from the right clicked menu. Need urgent suggestions?

 

[Trouble]

Try selecting (highlighting) the item and then strike the "Enter" key on your keyboard.
Does that effectively open it?
IF so, then you may have to go into Control Panel -> Mouse and play around with your Double click speed settings .

 

[Rudra]

No it is still not opening. But if i open the application once then i could again open it if needed by double clicking on it.

 

[Trouble]

I would suggest trying another generic USB connected mouse and see if the symptoms remain the same.