Issue #26619: Improves error message when installing on out-of-date Windows Server

Tools/msi/bundle/Default.wxl

@@ -131,5 +131,15 @@ Please <a href="https://www.bing.com/search?q=how%20to%20install%20windows%20
 Please &lt;a href="https://www.bing.com/search?q=how%20to%20install%20windows%20vista%20service%20pack%202"&gt;update your machine&lt;/a&gt; and then restart the installation.</String>
   <String Id="FailureXPOrEarlier">Windows Vista or later is required to install and use [WixBundleName].
 
+Visit &lt;a href="https://www.python.org/"&gt;python.org&lt;/a&gt; to download Python 3.4.</String>
+
+  <String Id="FailureWS2K8R2MissingSP1">Windows Server 2008 R2 Service Pack 1 and all applicable updates are required to install [WixBundleName].
+
+Please &lt;a href="https://www.bing.com/search?q=how%20to%20install%20windows%20server%202008%20r2%20service%20pack%201"&gt;update your machine&lt;/a&gt; and then restart the installation.</String>
+  <String Id="FailureWS2K8MissingSP2">Windows Server 2008 Service Pack 2 and all applicable updates are required to install [WixBundleName].
+
+Please &lt;a href="https://www.bing.com/search?q=how%20to%20install%20windows%20server%202008%20service%20pack%202"&gt;update your machine&lt;/a&gt; and then restart the installation.</String>
+  <String Id="FailureWS2K3OrEarlier">Windows Server 2008 SP2 or later is required to install and use [WixBundleName].
+
 Visit &lt;a href="https://www.python.org/"&gt;python.org&lt;/a&gt; to download Python 3.4.</String>
 </WixLocalization>

Tools/msi/bundle/bootstrap/PythonBootstrapperApplication.cpp

@@ -3032,8 +3032,29 @@ private:
     void ValidateOperatingSystem() {
         LOC_STRING *pLocString = nullptr;
         
+        if (IsWindowsServer()) {
+            if (IsWindowsVersionOrGreater(6, 1, 1)) {
+                BalLog(BOOTSTRAPPER_LOG_LEVEL_STANDARD, "Target OS is Windows Server 2008 R2 or later");
+                return;
+            } else if (IsWindowsVersionOrGreater(6, 1, 0)) {
+                BalLog(BOOTSTRAPPER_LOG_LEVEL_ERROR, "Detected Windows Server 2008 R2");
+                BalLog(BOOTSTRAPPER_LOG_LEVEL_ERROR, "Service Pack 1 is required to continue installation");
+                LocGetString(_wixLoc, L"#(loc.FailureWS2K8R2MissingSP1)", &pLocString);
+            } else if (IsWindowsVersionOrGreater(6, 0, 2)) {
+                BalLog(BOOTSTRAPPER_LOG_LEVEL_ERROR, "Target OS is Windows Server 2008 SP2 or later");
+                return;
+            } else if (IsWindowsVersionOrGreater(6, 0, 0)) {
+                BalLog(BOOTSTRAPPER_LOG_LEVEL_ERROR, "Detected Windows Server 2008");
+                BalLog(BOOTSTRAPPER_LOG_LEVEL_ERROR, "Service Pack 2 is required to continue installation");
+                LocGetString(_wixLoc, L"#(loc.FailureWS2K8MissingSP2)", &pLocString);
+            } else {
+                BalLog(BOOTSTRAPPER_LOG_LEVEL_ERROR, "Detected Windows Server 2003 or earlier");
+                BalLog(BOOTSTRAPPER_LOG_LEVEL_ERROR, "Windows Server 2008 SP2 or later is required to continue installation");
+                LocGetString(_wixLoc, L"#(loc.FailureWS2K3OrEarlier)", &pLocString);
+            }
+        } else {
             if (IsWindows7SP1OrGreater()) {
-            BalLog(BOOTSTRAPPER_LOG_LEVEL_ERROR, "Target OS is Windows 7 SP1 or later");
+                BalLog(BOOTSTRAPPER_LOG_LEVEL_STANDARD, "Target OS is Windows 7 SP1 or later");
                 return;
             } else if (IsWindows7OrGreater()) {
                 BalLog(BOOTSTRAPPER_LOG_LEVEL_ERROR, "Detected Windows 7 RTM");
@@ -3051,6 +3072,7 @@ private:
                 BalLog(BOOTSTRAPPER_LOG_LEVEL_ERROR, "Windows Vista SP2 or later is required to continue installation");
                 LocGetString(_wixLoc, L"#(loc.FailureXPOrEarlier)", &pLocString);
             }
+        }
 
         if (pLocString && pLocString->wzText) {
             BalFormatString(pLocString->wzText, &_failedMessage);