Hi, Tested last week PSE400W2K3R06 on a test server and everything went ok so rolled out yesterday PSE400W2K3R06 in production (Windows 2003 SP2 , PS 4.0 farm), but now a lot of people only see a few of all published applications they are granted for (via Program Neighborhood client). WebInterface 4.5 even does not show any application. Looking at the WI servers I found following error messages: "The XML document sent by the Citrix servers could not be processed because it contains invalid XML. This message was reported from the XML Service at address "http://<server ip>:80/scripts/wpnbr.dll http://com.citrix.xml.NFuseProtocol.RequestAppData";. This XML Service could not be contacted and will be temporarily removed from the list of active services. Log ID: 2578550e" And detail from networksnif on WI server: </AppData> <AppData> <InName>Exact2;WUR 353</InName> <FName>Exact ;WUR 353</FName> <Details> </Details> <SeqNo>1223897127</SeqNo> <ServerType>win32</ServerType> <ClientType>ica30</ClientType> </AppData> <AppData> <InName>IE</InName> 15c <?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE NFuseProtocol SYSTEM "NFuse.dtd"> <NFuseProtocol version="4.1"> <ResponseAppData>; <ErrorId>unspecified</ErrorId> <MPSError type="IMA">0x80000032</MPSError> <BrowserError>0x00000024</BrowserError> </ResponseAppData> </NFuseProtocol> Recreating the local host cache is not working. A restore of the data store before the PSE400W2K3R06 did not work either. Any ideas what is the culprit? Andre