IISProxy URL - Bad Request (Invalid URL) in refresh option

Question

Hello SDN colleagues,
We are facing a very strange behavior in SAP EP 6, let me try to explain as clear as I can.
First, the EP version:
J2EE Engine 6.40 PatchLevel 89291.313
Portal 6.0.11.3.0
KnowledgeManagementCollaboration 6.0.9.0.0 (NW04 SPS09)
We have activated Windows Authentication Integration through IISProxy (version 1.6.2.0), it's working fine and the portal users are being authenticated automatically once the're logged in the MS network, using the url http://sapep.domain.com/irj.
The problem: when the user clicks the "Refresh" option in the Page Title Bar, the portal displays the message "Bad Request (Invalid URL)." This is happening with all pages, and the worst - in the UWL iview when the user tries to launch a transaction.
But if the user logs on using the authentication form - url http://sapep.domain.com:50000/irj/portal - there is no error.
It seems that the problem is related to the mapping made by IISProxy, after logging the user and redirecting to the portal it's just change the url to the standard (port 50000) then it works fine.
Here is the mapping done in the iisproxy xml file:
<ISAPI-config version="1.6">
   <filter name="IisProxy filter" authentication="forward" />
      <extension name="IisProxy extension" />
        <mapping name="IisProxy Portal" >
          <source>
            <protocol>http</protocol>
            <prefix>/irj</prefix>
          </source>
          <source>
            <protocol>http</protocol>
            <prefix>/portal</prefix>
            <new-prefix>/irj</new-prefix>
          </source>
          <source>
            <protocol>http</protocol>
            <new-prefix>/irj</new-prefix>
          </source>
          <target>
            <protocol>http</protocol>
            <host>sapep.domain.com</host>
            <port>50000</port>
          </target>
       <compress-types>text/html, text/plain</compress-types>
     </mapping>
Any idea ? Is it possible to keep the standard url ?
Thanks in advance, and regards.
Fernando R Cervantes

Answer 1

Hi Fernando,
This sounds like SAP Note 734462:
https://websmp103.sap-ag.de/~sapidb/012006153200000213912004E.ITF
Microsoft Link (also avilable in the note):
http://support.microsoft.com/default.aspx?scid=kb;en-us;820129
The value to change is UrlSegmentMaxLength (We changed from 260 to 1000).
A restart to the whole server is required for the change to take affect (since it's a change to the registry).
Hope that helps,
Yoav.