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.NET Forum / ASP.NET / Web Services / March 2007Problem with WCF WebService hosted in IIS 6.0
Hi, I have written a webservice using WCF. Everything works fine and I can consume the webservice using wsdl, svcutil or visual studio as long as the application pool is running under network_service or an account that is a member of the local administrators group. This webservice needs to run as a different user. When I change the identity, the request http://server/myservice.svc?xsd=xsd0 fails (IIS Log indicated an HTTP/200 (OK) - but no data is returned to the client) and hence, I cannot consume the service as the complete schema is not returned. The page http://server/myservice.svc?wsdl works fine, it's just the xsd=xsd0, xsd=xsd1 etc.. that don't work. I've tried monitoring using regmon and filemon but have been unable to find a cause for this. Any tips anyone? I really don't want the app to run under an identity that is local administrator, and network_service does not have the appropriate rights on the network services that this webservice accesses. Regards, Arild > Hi, > > I have written a webservice using WCF. Everything works fine and I can > consume the webservice using wsdl, svcutil or visual studio as long as > the application pool is running under network_service or an account that > is a member of the local administrators group. Actually, being member of the local administrators group does not fix the problem. Being a domain administrator does though... I don't get this. Also when running as that serviceaccount I keep getting the ASP.NET Event ID 1093 indicating that it could not read the cache memory limit. I fixed that using the MetaAcl.vbs script but still noe xsd from the WCF webservice. Regards, Arild Forget that last post about local administrator not being enough - it was probably my browsercache or a missing iisreset that led me to misinterpret the results. I've now used MetaAcl to grant the serviceaccount full access to the entire IIS MetaBase and that did not do the trick. A filemon to scan for any access denied problems results in none - regmon to scan for any access denied problems does result in some keys regarding certificates but I also get those when being local admin and when running as network service so I don't think that is the problem. Am I looking at a complete reinstall of these servers (there are two in a NLB)? Will it even help to reinstall? Regards, Arild (getting frustrated) > Hi, > > I have written a webservice using WCF. Everything works fine and I can > consume the webservice using wsdl, svcutil or visual studio as long as > the application pool is running under network_service or an account that > is a member of the local administrators group. Ah - found it! I was monitoring the w3wp.exe process, but it spawns off a csc.exe process when generating the xsd and when monitoring that one I could see that the account did not have enough rights on the Windows\Temp folder. I would have expected the IIS_WPG group to have enough rights to perform the required operations though. Adding "list contents" and "delete" rights to this group (same as the network service account has) solved it. Regards, Arild Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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