add note re: window 10 versions for v20 urls

windows/security/threat-protection/windows-defender-atp/configure-proxy-internet-windows-defender-advanced-threat-protection.md

@@ -10,7 +10,7 @@ ms.pagetype: security
 ms.author: macapara
 author: mjcaparas
 ms.localizationpriority: high
-ms.date: 10/16/2017
+ms.date: 05/03/2018
 ---
 
 
@@ -85,26 +85,18 @@ For example: netsh winhttp set proxy 10.0.0.6:8080
 ## Enable access to Windows Defender ATP service URLs in the proxy server
 If a proxy or firewall is blocking all traffic by default and allowing only specific domains through or HTTPS scanning (SSL inspection) is enabled, make sure that the following URLs are white-listed to permit communication with Windows Defender ATP service in port 80 and 443:
 
-**For Windows 10, version 1607 to Windows 10, version  1709**:
+>![NOTE]
+> URLs that include v20 in them are only needed if you have Windows 10, version 1803 or later machines. For example, ```us-v20.events.data.microsoft.com``` is only needed if the machine is on Windows 10, version 1803 or later. 
 
 Service location | Microsoft.com DNS record
 :---|:---
-Common URLs for all locations | ```*.blob.core.windows.net``` <br>```crl.microsoft.com```<br> ```ctldl.windowsupdate.com``` 
+Common URLs for all locations | ```*.blob.core.windows.net``` <br>```crl.microsoft.com```<br> ```ctldl.windowsupdate.com``` ```events.data.microsoft.com```
-US | ```us.vortex-win.data.microsoft.com```<br> ```winatp-gw-cus.microsoft.com``` <br>```winatp-gw-eus.microsoft.com```
+US | ```us.vortex-win.data.microsoft.com```<br> ```us-v20.events.data.microsoft.com```<br>```winatp-gw-cus.microsoft.com``` <br>```winatp-gw-eus.microsoft.com```
-Europe | ```eu.vortex-win.data.microsoft.com```<br>```winatp-gw-neu.microsoft.com```<br>```winatp-gw-weu.microsoft.com```
+Europe | ```eu.vortex-win.data.microsoft.com```<br>```eu-v20.events.data.microsoft.com```<br>```winatp-gw-neu.microsoft.com```<br>```winatp-gw-weu.microsoft.com```
-UK | ```uk.vortex-win.data.microsoft.com``` <br>```winatp-gw-uks.microsoft.com```<br>```winatp-gw-ukw.microsoft.com```
+UK | ```uk.vortex-win.data.microsoft.com``` <br>```uk-v20.events.data.microsoft.com```<br>```winatp-gw-uks.microsoft.com```<br>```winatp-gw-ukw.microsoft.com```
-AU | ```au.vortex-win.data.microsoft.com```<br>```winatp-gw-aue.microsoft.com```<br>```winatp-gw-aus.microsoft.com```
+AU | ```au.vortex-win.data.microsoft.com```<br>```uk-v20.events.data.microsoft.com```<br>```winatp-gw-aue.microsoft.com```<br>```winatp-gw-aus.microsoft.com```
 
 
-**For Windows 10, version 1803**:
-
-Service location | Microsoft.com DNS record
-:---|:---
-Common URLs for all locations |```*.blob.core.windows.net```<br>```crl.microsoft.com```<br> ```ctldl.windowsupdate.com```<br>```events.data.microsoft.com```
-US | ```us-v20.events.data.microsoft.com```<br>```winatp-gw-cus.microsoft.com```<br> ```winatp-gw-eus.microsoft.com```
-Europe | ```eu-v20.events.data.microsoft.com```<br>```winatp-gw-neu.microsoft.com```<br>```winatp-gw-weu.microsoft.com```
-UK | ```uk-v20.events.data.microsoft.com```<br>```winatp-gw-uks.microsoft.com```<br>```winatp-gw-ukw.microsoft.com```
-AU | ```au-v20.events.data.microsoft.com```<br>```winatp-gw-aue.microsoft.com```<br>```winatp-gw-aus.microsoft.com```
 
 
  If a proxy or firewall is blocking anonymous traffic, as Windows Defender ATP  sensor is connecting from system context, make sure anonymous traffic is permitted in the above listed URLs.