First thing first, changing the network adapter setting:

1. Press the windows key and type Control - This will open Control Panel:

https://steamuserimages-a.akamaihd.net/ugc/1759198503439723480/1164DFE2C81E9D222B853A24BCEF3F881DD12845/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=falseontrol Panel

2. If your Control panel is listed as "Category" change this to "Large Icons" for easier Navigation:

https://steamuserimages-a.akamaihd.net/ugc/1759198503439738957/AFFA8A694413E46FB10B8D1BFBB0A0F9CF0DE6B9/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false

3. Select "Network and Sharing Centre" then "Change Adapter Settings"

https://steamuserimages-a.akamaihd.net/ugc/1759198503439746084/A75FFADD398419ECC7EAEB01FAA0526DF0F732E3/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false

4. Right Click your Network Adapter and select "Properties" :

https://steamuserimages-a.akamaihd.net/ugc/1759198503439755368/AB6FF21AA47FBD1C6C972690470BE92A40697C73/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false

5. Uncheck the IPv6 option then click ok - Note this may disconnect you for a moment, good practice is to then reboot:

https://steamuserimages-a.akamaihd.net/ugc/1759198503439761556/0A2470710AB42FEDF1EDF275B278067E01404FF9/?imw=256&&ima=fit&impolicy=Letterbox&imcolor=%23000000&letterbox=false

6. Launch the game! - for me this worked and now I can play everytime