diff --git a/lib/native/windows-64/jmsoutlookaddrbook.dll b/lib/native/windows-64/jmsoutlookaddrbook.dll
index b8e4b4793..6fd9e0e12 100755
Binary files a/lib/native/windows-64/jmsoutlookaddrbook.dll and b/lib/native/windows-64/jmsoutlookaddrbook.dll differ
diff --git a/lib/native/windows-64/jmsoutlookaddrbookcomserver32.exe b/lib/native/windows-64/jmsoutlookaddrbookcomserver32.exe
index 503dcd849..9907c317a 100755
Binary files a/lib/native/windows-64/jmsoutlookaddrbookcomserver32.exe and b/lib/native/windows-64/jmsoutlookaddrbookcomserver32.exe differ
diff --git a/lib/native/windows-64/jmsoutlookaddrbookcomserver64.exe b/lib/native/windows-64/jmsoutlookaddrbookcomserver64.exe
index d05c880a1..ae28f7400 100755
Binary files a/lib/native/windows-64/jmsoutlookaddrbookcomserver64.exe and b/lib/native/windows-64/jmsoutlookaddrbookcomserver64.exe differ
diff --git a/lib/native/windows/jmsoutlookaddrbook.dll b/lib/native/windows/jmsoutlookaddrbook.dll
index 885cb34dd..ad51093ac 100755
Binary files a/lib/native/windows/jmsoutlookaddrbook.dll and b/lib/native/windows/jmsoutlookaddrbook.dll differ
diff --git a/lib/native/windows/jmsoutlookaddrbookcomserver32.exe b/lib/native/windows/jmsoutlookaddrbookcomserver32.exe
index 42c85a606..e52edd3f7 100755
Binary files a/lib/native/windows/jmsoutlookaddrbookcomserver32.exe and b/lib/native/windows/jmsoutlookaddrbookcomserver32.exe differ
diff --git a/lib/native/windows/jmsoutlookaddrbookcomserver64.exe b/lib/native/windows/jmsoutlookaddrbookcomserver64.exe
index bb78deb74..910de80c2 100755
Binary files a/lib/native/windows/jmsoutlookaddrbookcomserver64.exe and b/lib/native/windows/jmsoutlookaddrbookcomserver64.exe differ
diff --git a/src/native/addrbook/msoutlook/com/ComClient.cxx b/src/native/addrbook/msoutlook/com/ComClient.cxx
index b13dcf3a2..4c3dfcf33 100644
--- a/src/native/addrbook/msoutlook/com/ComClient.cxx
+++ b/src/native/addrbook/msoutlook/com/ComClient.cxx
@@ -43,7 +43,8 @@ void ComClient_start(void)
 {
     HRESULT hr = E_FAIL;
 
-    if(CoInitializeEx(NULL, COINIT_MULTITHREADED) == S_OK)
+    if((hr = CoInitializeEx(NULL, COINIT_MULTITHREADED)) == S_OK
+            || hr == S_FALSE)
     {
         // The server may be long to start, then retry 10 times with 1s pause
         // between each try.
diff --git a/src/native/addrbook/msoutlook/com/server/Server.cxx b/src/native/addrbook/msoutlook/com/server/Server.cxx
index 44cd8723b..fcdd73197 100644
--- a/src/native/addrbook/msoutlook/com/server/Server.cxx
+++ b/src/native/addrbook/msoutlook/com/server/Server.cxx
@@ -29,7 +29,8 @@ int main(int argc, char** argv)
 {
     HRESULT hr = E_FAIL;
 
-    if(::CoInitializeEx(NULL, COINIT_MULTITHREADED) != S_OK)
+    if((hr = ::CoInitializeEx(NULL, COINIT_MULTITHREADED)) != S_OK
+            && hr != S_FALSE)
     {
         return hr;
     }
diff --git a/src/net/java/sip/communicator/plugin/addrbook/msoutlook/MsOutlookAddrBookContactQuery.java b/src/net/java/sip/communicator/plugin/addrbook/msoutlook/MsOutlookAddrBookContactQuery.java
index d529898c1..e11a525ed 100644
--- a/src/net/java/sip/communicator/plugin/addrbook/msoutlook/MsOutlookAddrBookContactQuery.java
+++ b/src/net/java/sip/communicator/plugin/addrbook/msoutlook/MsOutlookAddrBookContactQuery.java
@@ -375,6 +375,10 @@ public MsOutlookAddrBookContactQuery(
             Pattern query)
     {
         super(msoabcss, query);
+        if(logger.isDebugEnabled())
+        {
+            logger.debug("Creating new query: " + query.toString());
+        }
     }
 
     /**
@@ -804,6 +808,10 @@ private boolean matches(int property, String value)
     private boolean onMailUser(String id)
         throws MsOutlookMAPIHResultException
     {
+        if(logger.isDebugEnabled())
+        {
+            logger.debug("Found contact id: " + id);
+        }
         Object[] props
             = IMAPIProp_GetProps(
                     id,
@@ -842,8 +850,14 @@ && matches(propIndex, (String) prop)
             }
             propIndex++;
         }
+
         if (matches)
         {
+            if(logger.isDebugEnabled())
+            {
+                logger.debug("Contact matches: " + id
+                        + ", displayName: " + getDisplayName(props));
+            }
             List<ContactDetail> contactDetails = getContactDetails(props);
 
             // What's the point of showing a contact who has no contact details?
@@ -960,6 +974,10 @@ public static List<ContactDetail> getContactDetails(Object[] values)
     @Override
     protected void run()
     {
+        if(logger.isDebugEnabled())
+        {
+            logger.debug("run query: " + query.toString());
+        }
         synchronized (MsOutlookAddrBookContactQuery.class)
         {
             foreachMailUser(
@@ -1134,6 +1152,7 @@ public static String getDisplayName(Object[] values)
 
         return displayName;
     }
+
     /**
      * Gets the organization name to be set on a <tt>SourceContact</tt>.
      *