It's a long shot, but any pointers or advice would be most welcome. We have two web front ends, of which one does not have any issue with the following error unlike the other web front end. The warning we are getting in the event log is: Event Type: Warning Event Source: ASP.NET 2.0.50727.0 Event Category: Web Event Event ID: 1309 Date: 14/05/2012 Time: 13:30:27 User: N/A Computer: xxxxxxxxFE046 Description: Event code: 3005 Event message: An unhandled exception has occurred. Event time: 14/05/2012 13:30:27 Event time (UTC): 14/05/2012 12:30:27 Event ID: c9ea436fa55848fabdf1fccbb81dee35 Event sequence: 49098 Event occurrence: 15307 Event detail code: 0 Application information: Application domain: /LM/W3SVC/1061470801/Root-1-129814655014588109 Trust level: WSS_Minimal Application Virtual Path: / Application Path: D:\Inetpub\Wwwroot\wss\VirtualDirectories\xxx80\ Machine name: SxxxxxxxFE046 Process information: Process ID: 7096 Process name: w3wp.exe Account name: xxxxxxx Exception information: Exception type: SEHException Exception message: External component has thrown an exception. Request information: Request URL: http://xxx/_vti_bin/_vti_aut/author.dll Request path: /_vti_bin/_vti_aut/author.dll User host address: 10.0.135.58 User: xxxxx\xxxxxx Is authenticated: True Authentication Type: Negotiate Thread account name: xxxxxx Thread information: Thread ID: 18 Thread account name: xxxxxx Is impersonating: True Stack trace: at Microsoft.SharePoint.Library.SPRequestInternalClass.GetHash() at Microsoft.SharePoint.Library.SPRequest.GetHash() at Microsoft.SharePoint.ApplicationRuntime.SPHttpHandler.get_Hash() at Microsoft.SharePoint.ApplicationRuntime.SPHttpHandler.get_AppDomainIdHeader() at Microsoft.SharePoint.ApplicationRuntime.SPHttpHandler.OverrideExecuteUrlPath() at System.Web.DefaultHttpHandler.BeginProcessRequest(HttpContext context, AsyncCallback callback, Object state) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) I've had a quick Google and found out that authior.dll is responsible for: "The ISAPI extension that implements authoring operations, such as uploading files, applying themes, renaming and deleting documents, and so forth. Path: http://www.server.com/subweb/_vti_bin/_vti_aut/author.dll" Any ideas to why this would be raising a warning message in the event logs? Any one else come across this before? I'm currently in the dark with this one. Many thanks, Keith.

Hi kmcknight Im afraid that you cannot get the reason that cause the problem from the information that you provided. The Microsoft.SharePoint.Library.SPRequestInternalClass is a COM Component and The SEHException indicates that the GetHash returned HRESULT E_FAIL or Some SEH errors that have not been mapped to another .NET Framework exception were thrown, but you cannot get more information about the error and the stack trace in the COM Component. Fortunately, I think that some log will be recorded in the ULS log, you may check the log to gather more information. The author.dll is a ISAPI extension that implements authoring operations, but the HTTP action is POST, so the request is not logged in the URL you provided. You may use HTTP tracer to sniff the http traffic to find out the actual RPC method the Client is calling. You may find the HTTP traffic like this: method=list access: server_extension_version &service_name=web_url &url=url &user_or_group=(user | group | both) then you can find out whats wrong with the request. Please read these link for more information. http://msdn.microsoft.com/en-us/library/dd623976(v=office.11) http://geek.hubkey.com/2007/11/upload-file-to-sharepoint-document.html http://msdn.microsoft.com/en-us/library/system.runtime.interopservices.sehexception.aspx Thanks,Lambda Zhao TechNet Community Support

Hi Lambda, Unfortunately I'm doing this for a colleague, so I don't have any more information. Many thanks for the pointers though. Ill pass the info on. Very much appreciated. I'll see if I can shed some more light on it when I get the opportunity. Again, thanks. Regards, Keith.

Hi, Try an application pool recycle. I hope this will help you out.Thanks, Rahul Rashu