Dear All, I have been installed update roolup 4 on exchange 2007 on client access server and after that we faced some issue and we uninstall update roolup 4 and currently we are running with update roolup 2 service pack 1 exchange 2007. Now after sometimes we are recieving warnings in event viewer as shown below. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Event code: 3005 Event message: An unhandled exception has occurred. Event time: 9/28/2008 8:10:43 AM Event time (UTC): 9/28/2008 5:10:43 AM Event ID: eae704db512e4d48b2fe367b6da07847 Event sequence: 62 Event occurrence: 61 Event detail code: 0 Application information: Application domain: /LM/W3SVC/1/ROOT/EWS-1-128670510372848320 Trust level: Full Application Virtual Path: /EWS Application Path: C:\Program Files\Microsoft\Exchange Server\ClientAccess\exchweb\EWS\ Machine name: SARYCRPCAHB02 Process information: Process ID: 5368 Process name: w3wp.exe Account name: NT AUTHORITY\SYSTEM Exception information: Exception type: FileNotFoundException Exception message: Could not load file or assembly 'Microsoft.Exchange.Diagnostics, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. Request information: Request URL: https://mail.sa.zain.com:443/EWS/Exchange.asmx Request path: /EWS/Exchange.asmx User host address: 10.123.105.71 User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\SYSTEM Thread information: Thread ID: 6 Thread account name: NT AUTHORITY\SYSTEM Is impersonating: False Stack trace: at Microsoft.Exchange.Services.AuthorizationModule.Init(HttpApplication context) at System.Web.HttpApplication.InitModulesCommon() at System.Web.HttpApplication.InitInternal(HttpContext context, HttpApplicationState state, MethodInfo[] handlers) at System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext context) at System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext context) at System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr)------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Event code: 3005 Event message: An unhandled exception has occurred. Event time: 9/28/2008 8:16:38 AM Event time (UTC): 9/28/2008 5:16:38 AM Event ID: d4c4ecbada8b46aeb69641e4fe6f88f0 Event sequence: 87 Event occurrence: 86 Event detail code: 0 Application information: Application domain: /LM/W3SVC/1/ROOT/EWS-1-128670510372848320 Trust level: Full Application Virtual Path: /EWS Application Path: C:\Program Files\Microsoft\Exchange Server\ClientAccess\exchweb\EWS\ Machine name: SARYCRPCAHB02 Process information: Process ID: 5368 Process name: w3wp.exe Account name: NT AUTHORITY\SYSTEM Exception information: Exception type: FileNotFoundException Exception message: Could not load file or assembly 'Microsoft.Exchange.Diagnostics, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. Request information: Request URL: https://mail.sa.zain.com:443/EWS/Exchange.asmx Request path: /EWS/Exchange.asmx User host address: 10.123.105.71 User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\SYSTEM Thread information: Thread ID: 8 Thread account name: NT AUTHORITY\SYSTEM Is impersonating: False Stack trace: at Microsoft.Exchange.Services.AuthorizationModule.Init(HttpApplication context) at System.Web.HttpApplication.InitModulesCommon() at System.Web.HttpApplication.InitInternal(HttpContext context, HttpApplicationState state, MethodInfo[] handlers) at System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext context) at System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext context) at System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr)------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Event code: 3005 Event message: An unhandled exception has occurred. Event time: 9/28/2008 8:06:28 AM Event time (UTC): 9/28/2008 5:06:28 AM Event ID: d26ba9dd5c7f446a87c44455fb57ce58 Event sequence: 50 Event occurrence: 49 Event detail code: 0 Application information: Application domain: /LM/W3SVC/1/ROOT/EWS-1-128670510372848320 Trust level: Full Application Virtual Path: /EWS Application Path: C:\Program Files\Microsoft\Exchange Server\ClientAccess\exchweb\EWS\ Machine name: SARYCRPCAHB02 Process information: Process ID: 5368 Process name: w3wp.exe Account name: NT AUTHORITY\SYSTEM Exception information: Exception type: FileNotFoundException Exception message: Could not load file or assembly 'Microsoft.Exchange.Diagnostics, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. Request information: Request URL: https://sarycrpcahb02.sa.zain.com:443/EWS/Exchange.asmx Request path: /EWS/Exchange.asmx User host address: 10.123.25.124 User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\SYSTEM Thread information: Thread ID: 8 Thread account name: NT AUTHORITY\SYSTEM Is impersonating: False Stack trace: at Microsoft.Exchange.Services.AuthorizationModule.Init(HttpApplication context) at System.Web.HttpApplication.InitModulesCommon() at System.Web.HttpApplication.InitInternal(HttpContext context, HttpApplicationState state, MethodInfo[] handlers) at System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext context) at System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext context) at System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Event code: 3005 Event message: An unhandled exception has occurred. Event time: 9/28/2008 8:08:24 AM Event time (UTC): 9/28/2008 5:08:24 AM Event ID: 34243e80a0ec4b609992a09af9265857 Event sequence: 56 Event occurrence: 55 Event detail code: 0 Application information: Application domain: /LM/W3SVC/1/ROOT/EWS-1-128670510372848320 Trust level: Full Application Virtual Path: /EWS Application Path: C:\Program Files\Microsoft\Exchange Server\ClientAccess\exchweb\EWS\ Machine name: SARYCRPCAHB02 Process information: Process ID: 5368 Process name: w3wp.exe Account name: NT AUTHORITY\SYSTEM Exception information: Exception type: FileNotFoundException Exception message: Could not load file or assembly 'Microsoft.Exchange.Diagnostics, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. Request information: Request URL: https://sarycrpcahb02.sa.zain.com:443/EWS/Exchange.asmx Request path: /EWS/Exchange.asmx User host address: 10.123.26.12 User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\SYSTEM Thread information: Thread ID: 6 Thread account name: NT AUTHORITY\SYSTEM Is impersonating: False Stack trace: at Microsoft.Exchange.Services.AuthorizationModule.Init(HttpApplication context) at System.Web.HttpApplication.InitModulesCommon() at System.Web.HttpApplication.InitInternal(HttpContext context, HttpApplicationState state, MethodInfo[] handlers) at System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext context) at System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext context) at System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- vent code: 3005 Event message: An unhandled exception has occurred. Event time: 9/28/2008 8:12:31 AM Event time (UTC): 9/28/2008 5:12:31 AM Event ID: 2496303c0987479182f0c53b22f0240c Event sequence: 71 Event occurrence: 70 Event detail code: 0 Application information: Application domain: /LM/W3SVC/1/ROOT/EWS-1-128670510372848320 Trust level: Full Application Virtual Path: /EWS Application Path: C:\Program Files\Microsoft\Exchange Server\ClientAccess\exchweb\EWS\ Machine name: SARYCRPCAHB02 Process information: Process ID: 5368 Process name: w3wp.exe Account name: NT AUTHORITY\SYSTEM Exception information: Exception type: FileNotFoundException Exception message: Could not load file or assembly 'Microsoft.Exchange.Diagnostics, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. Request information: Request URL: https://sarycrpcahb02.sa.zain.com:443/EWS/Exchange.asmx Request path: /EWS/Exchange.asmx User host address: 10.123.25.56 User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\SYSTEM Thread information: Thread ID: 6 Thread account name: NT AUTHORITY\SYSTEM Is impersonating: False Stack trace: at Microsoft.Exchange.Services.AuthorizationModule.Init(HttpApplication context) at System.Web.HttpApplication.InitModulesCommon() at System.Web.HttpApplication.InitInternal(HttpContext context, HttpApplicationState state, MethodInfo[] handlers) at System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext context) at System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext context) at System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr)======================================================================================== The possible solution that i found on technet is. 1) Open the web.config file located at <Exchange Install folder>\Client Access\exchweb\ews using an editor like Notepad.exe. 2) Replace all instances of %ExchangeInstallDir% with the actual path of the Exchange installation folder. E.g. If you have installed Exchange in D:\Program Files\Microsoft\Exchange Server replace %ExchangeInstallDir% with D:\Program Files\Microsoft\Exchange Server\. Here is a line in the web.config file. Before <codeBase version="0.0.0.0" href="file:///%ExchangeInstallDir%bin\Microsoft.Exchange.Common.IL.dll"/> After <codeBase version="0.0.0.0" href="file:///D:\Program Files\Microsoft\Exchange Server\bin\Microsoft.Exchange.Common.IL.dll"/> 3) Restart W3SVC service But this does not helps me kindly if somebody has solution how to avoid to these warnings please let me know. Thanks and RegardsKhalid

Hi, If your concern is about rollup 4 for Exchange Server 2007 sp1,then please refer to Exchange Team blog Update Rollup 4 for Exchange Server 2007 Service Pack 1 http://www.microsoft.com/communities/newsgroups/en-us/default.aspx?dg=microsoft.public.office.misc&cat=en_US_24f872ec-a5b6-4cc1-925d-0364c03e6da6&lang=en&cr=US Hope it helps. Xiu