One of my clients recently needed to have WSE installed on the same server as SharePoint. Their policy caused some issues with SharePoint web services. After a support call we came up with this solution to running WSE and SharePoint in the same virtual server…
1. Create a blank policyCache.config file – or remove the nodes underneath /policyDocument/mappings and /policyDocument/policies from your existing policyCache.config file.
2. Add to the /policyDocument/mappings node the following nodes:
<request policy=”” />
<response policy=”” />
<fault policy=”” />
3. Save the file into the C:\Program files\Common Files\Microsoft Shared\Web Server Extensions\60\ISAPI directory as policyCache.config
4. Perform an IISRESET.
That should make WSE and SharePoint get along much better.