This is a know problem with NPCAP driver that I have seen many times. you can un-install the NPCAP driver from the network adaptor and re-install the service again. That has solved my issues before in 98% of the cases.
This is especially the problem when you have some Siemens software on the PC as well. The versions for the Siemens software (TIA) and PLCNext Engineer are not the same and can generated this issue.
Peter Paul