diff --git a/autobuild.xml b/autobuild.xml
index 4d9638e3f1..a84b6ff7cc 100644
--- a/autobuild.xml
+++ b/autobuild.xml
@@ -3394,9 +3394,9 @@ Copyright (c) 2012, 2014, 2015, 2016 nghttp2 contributors</string>
             <key>archive</key>
             <map>
               <key>hash</key>
-              <string>c5ab9d9d7482e48cd76f4bf391900a8c</string>
+              <string>dfef4288f26457f7d41bb17768cc88d4</string>
               <key>url</key>
-              <string>http://automated-builds-secondlife-com.s3.amazonaws.com/ct2/43369/385585/viewer_manager-2.0.531000-darwin64-531000.tar.bz2</string>
+              <string>https://automated-builds-secondlife-com.s3.amazonaws.com/ct2/71888/695068/viewer_manager-2.0.551854-darwin64-551854.tar.bz2</string>
             </map>
             <key>name</key>
             <string>darwin64</string>
@@ -3430,9 +3430,9 @@ Copyright (c) 2012, 2014, 2015, 2016 nghttp2 contributors</string>
             <key>archive</key>
             <map>
               <key>hash</key>
-              <string>6b10d7407686d9e12e63576256581e3e</string>
+              <string>d6d3081c7da304b24e9ff39452bae563</string>
               <key>url</key>
-              <string>http://automated-builds-secondlife-com.s3.amazonaws.com/ct2/43370/385592/viewer_manager-2.0.531000-windows-531000.tar.bz2</string>
+              <string>https://automated-builds-secondlife-com.s3.amazonaws.com/ct2/71889/695075/viewer_manager-2.0.551854-windows-551854.tar.bz2</string>
             </map>
             <key>name</key>
             <string>windows</string>
@@ -3443,7 +3443,7 @@ Copyright (c) 2012, 2014, 2015, 2016 nghttp2 contributors</string>
         <key>source_type</key>
         <string>hg</string>
         <key>version</key>
-        <string>2.0.531000</string>
+        <string>2.0.551854</string>
       </map>
       <key>vlc-bin</key>
       <map>
diff --git a/indra/newview/installers/windows/install_icon.BMP b/indra/newview/installers/windows/install_icon.BMP
index 09df573870..dba2636803 100644
Binary files a/indra/newview/installers/windows/install_icon.BMP and b/indra/newview/installers/windows/install_icon.BMP differ
diff --git a/indra/newview/installers/windows/uninstall_icon.BMP b/indra/newview/installers/windows/uninstall_icon.BMP
index 562b56676a..dba2636803 100644
Binary files a/indra/newview/installers/windows/uninstall_icon.BMP and b/indra/newview/installers/windows/uninstall_icon.BMP differ
diff --git a/indra/newview/lllogininstance.cpp b/indra/newview/lllogininstance.cpp
index c643c0fcdc..40b68be79a 100644
--- a/indra/newview/lllogininstance.cpp
+++ b/indra/newview/lllogininstance.cpp
@@ -347,7 +347,7 @@ void LLLoginInstance::handleLoginFailure(const LLSD& event)
         {
             data["certificate"] = response["certificate"];
         }
-        
+
         if (gViewerWindow)
             gViewerWindow->setShowProgress(FALSE, FALSE);
         LLFloaterReg::showInstance("message_critical", data);
@@ -363,13 +363,31 @@ void LLLoginInstance::handleLoginFailure(const LLSD& event)
         // login.cgi is insisting on a required update. We were called with an
         // event that bundles both the login.cgi 'response' and the
         // synchronization event from the 'updater'.
-        std::string required_version = response["message_args"]["VERSION"];
-        LL_WARNS("LLLogin") << "Login failed because an update to version " << required_version << " is required." << LL_ENDL;
+        std::string login_version = response["message_args"]["VERSION"];
+        std::string vvm_version   = updater["VERSION"];
+        std::string relnotes      = updater["URL"];
+        LL_WARNS("LLLogin") << "Login failed because an update to version " << login_version << " is required." << LL_ENDL;
+        // vvm_version might be empty because we might not have gotten
+        // SLVersionChecker's LoginSync handshake. But if it IS populated, it
+        // should (!) be the same as the version we got from login.cgi.
+        if ((! vvm_version.empty()) && vvm_version != login_version)
+        {
+            LL_WARNS("LLLogin") << "VVM update version " << vvm_version
+                                << " differs from login version " << login_version
+                                << "; presenting VVM version to match release notes URL"
+                                << LL_ENDL;
+            login_version = vvm_version;
+        }
+        if (relnotes.empty())
+        {
+            // I thought this would be available in strings.xml or some such
+            relnotes = "https://secondlife.com/support/downloads/";
+        }
 
         if (gViewerWindow)
             gViewerWindow->setShowProgress(FALSE, FALSE);
 
-        LLSD args(LLSDMap("VERSION", required_version));
+        LLSD args(LLSDMap("VERSION", login_version)("URL", relnotes));
         if (updater.isUndefined())
         {
             // If the updater failed to shake hands, better advise the user to
diff --git a/indra/newview/skins/default/xui/en/notifications.xml b/indra/newview/skins/default/xui/en/notifications.xml
index e5cdc59bbb..8050acf410 100644
--- a/indra/newview/skins/default/xui/en/notifications.xml
+++ b/indra/newview/skins/default/xui/en/notifications.xml
@@ -4148,6 +4148,8 @@ Finished download of raw terrain file to:
 [DOWNLOAD_PATH].
   </notification>
 
+  <!-- RequiredUpdate does not display release notes URL because we don't get
+       that from login.cgi's login failure message. -->
   <notification
    icon="alertmodal.tga"
    name="RequiredUpdate"
@@ -4165,6 +4167,7 @@ Please download from https://secondlife.com/support/downloads/
    name="PauseForUpdate"
    type="alertmodal">
 Version [VERSION] is required for login.
+Release notes: [URL]
 Click OK to download and install.
     <tag>confirm</tag>
     <usetemplate
@@ -4177,6 +4180,7 @@ Click OK to download and install.
    name="OptionalUpdateReady"
    type="alertmodal">
 Version [VERSION] has been downloaded and is ready to install.
+Release notes: [URL]
 Click OK to install.
     <tag>confirm</tag>
     <usetemplate
@@ -4189,6 +4193,7 @@ Click OK to install.
    name="PromptOptionalUpdate"
    type="alertmodal">
 Version [VERSION] has been downloaded and is ready to install.
+Release notes: [URL]
 Proceed?
     <tag>confirm</tag>
     <usetemplate