How to solve itunes error 9006

Since 1 month i m gettinh the error 9006,i hav tried many solutions like turning off third party software,firewalls,itunes software update,windows updtes and etc,but none of them worked

While updating my iphone 7plus with itunes it gives an error excactly after 2gb downlod of 2.75 gb

Plzz help guys,plz help