I had a user call me today and say that they were unable to access the OWA page. Upon connecting to it i also get the following error Server Error in '/owa' Application. Runtime Error Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine. Details: To enable the details of this specific error message to be viewable on remote machines, please create a <customErrors> tag within a "web.config" configuration file located in the root directory of the current web application. This <customErrors> tag should then have its "mode" attribute set to "Off". <!-- Web.Config Configuration File --> <configuration> <system.web> <customErrors mode="Off"/> </system.web> </configuration> Notes: The current error page you are seeing can be replaced by a custom error page by modifying the "defaultRedirect" attribute of the application's <customErrors> configuration tag to point to a custom error page URL. <!-- Web.Config Configuration File --> <configuration> <system.web> <customErrors mode="RemoteOnly" defaultRedirect="mycustompage.htm"/> </system.web> </configuration> Anyone have any idea what could be going on? I just updated to Exchange 2010 SP1 Rollup 3v3 and this didn't help anything.

Single CAS server? Going through NLB or HLB? Redirecting the Default Website? Same for both internal and external access? Tried to reboot server? Tim Harrington | MVP: Exchange | MCITP: EMA 2007/2010, MCITP: Lync 2010, MCITP: Server 2008, MCTS: OCS | Blog: http://HowDoUC.blogspot.com | Twitter: @twharrington

Single CAS server? Going through NLB or HLB? Redirecting the Default Website? Same for both internal and external access? Tried to reboot server? Tim Harrington | MVP: Exchange | MCITP: EMA 2007/2010, MCITP: Lync 2010, MCITP: Server 2008, MCTS: OCS | Blog: http://HowDoUC.blogspot.com | Twitter: @twharrington 1. yes, single server for everything 2. Not sure what this is, so probably not 3. I have it re-directing our mail.muskogeeonline.org to mail.muskogeeonline.org/owa 4. same happens both internally and externally 5. i've rebooted the server, and then installed update rollup 3v3 and rebooted again still same issue.

thanks for the info...can you verify your rediection settings using this article: http://briandesmond.com/blog/redirecting-owa-urls-in-exchange-2010/Tim Harrington | MVP: Exchange | MCITP: EMA 2007/2010, MCITP: Lync 2010, MCITP: Server 2008, MCTS: OCS | Blog: http://HowDoUC.blogspot.com | Twitter: @twharrington

thanks for the info...can you verify your rediection settings using this article: http://briandesmond.com/blog/redirecting-owa-urls-in-exchange-2010/ Tim Harrington | MVP: Exchange | MCITP: EMA 2007/2010, MCITP: Lync 2010, MCITP: Server 2008, MCTS: OCS | Blog: http://HowDoUC.blogspot.com | Twitter: @twharrington Yes, the redirect was setup just as it is here, still no go.

We are also getting this error in our event log Event code: 3005 Event message: An unhandled exception has occurred. Event time: 6/2/2011 8:05:45 AM Event time (UTC): 6/2/2011 1:05:45 PM Event ID: 6d0093eb19b846f691e68245ad6b808c Event sequence: 2 Event occurrence: 1 Event detail code: 0 Application information: Application domain: /LM/W3SVC/1/ROOT/owa-19-129514935449223776 Trust level: Full Application Virtual Path: /owa Application Path: C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\owa\ Machine name: EXCHANGE Process information: Process ID: 3424 Process name: w3wp.exe Account name: NT AUTHORITY\SYSTEM Exception information: Exception type: HttpException Exception message: Could not load file or assembly 'Microsoft.Exchange.Diagnostics, Version=14.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. Request information: Request URL: http://mail.muskogeeonline.org/owa/auth/logon.aspx?url=http://mail.muskogeeonline.org/owa/&reason=0 Request path: /owa/auth/logon.aspx User host address: 192.168.66.52 User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\SYSTEM Thread information: Thread ID: 21 Thread account name: NT AUTHORITY\SYSTEM Is impersonating: False Stack trace: at System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext context, HttpApplication app) at System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) at System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) at System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) at System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) Custom event details:

OK now we are getting this error in the error log Event code: 3008 Event message: A configuration error has occurred. Event time: 6/2/2011 9:15:38 AM Event time (UTC): 6/2/2011 2:15:38 PM Event ID: 77dfa31a0b604529bb0dd480da986127 Event sequence: 1 Event occurrence: 1 Event detail code: 0 Application information: Application domain: /LM/W3SVC/1/ROOT/owa-1-129514977381168145 Trust level: Full Application Virtual Path: /owa Application Path: C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\owa\ Machine name: EXCHANGE Process information: Process ID: 5176 Process name: w3wp.exe Account name: NT AUTHORITY\SYSTEM Exception information: Exception type: HttpException Exception message: Could not load file or assembly 'Microsoft.Exchange.Data.Directory, Version=14.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. (C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\owa\web.config line 57) Request information: Request URL: http://mail.muskogeeonline.org/owa/ Request path: /owa/ User host address: 192.168.54.77 User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\SYSTEM Thread information: Thread ID: 1 Thread account name: NT AUTHORITY\SYSTEM Is impersonating: False Stack trace: at System.Web.Compilation.BuildManager.ReportTopLevelCompilationException() at System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() at System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters) Custom event details:

Today I tried uninstalling ASP.net and re-installing it, and this did nothing. Re-installing the CA role isn't really an option since this is a live production system. I really would appreciate any and all help with this! Thank you.

Hi, I have ever come across the issue twice. I fixed the issue with the following method: Method 1: Restart IIS, then try to log in OWA again, the issue fixed. Method 2: 1. Open the file:web.config. You could find it via the following directory: C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\OWA\config 2. Follow the error message to modify customErrors mode to RemoteOnly <!-- Web.Config Configuration File --> <configuration> <system.web> <customErrors mode="RemoteOnly" defaultRedirect="mycustompage.htm"/> </system.web> </configuration> 3. Restart IIS 4. Try to log in OWA again, and it will remind you some .dll files are corrupted. 5. According to the reminds, recover the .dll files 6. Restart IIS, OWA works fine. According to my experience, I think the third method will fix the issue, although I have never try. Method 3: Recover the folder: C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\OWA And restart IIS. Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

OK, we restored the OWA directory from backup 2 weeks ago. Now we get the login screen, but after you put in your username/password we go to this immediately An unexpected error occurred and your request couldn't be handled. Request Url:http://mail.muskogeeonline.org:80/owa/auth.owa User host address:192.168.66.52 OWA version:14.1.218.13 Exception Exception type:System.MissingMethodException Exception message:Method not found: 'Void Microsoft.Exchange.Common.SecureArray`1.set_ArrayValue(!0[])'. Call stack Microsoft.Exchange.Clients.Owa.Core.SecureHtmlFormReader.TryReadSecureFormData(SecureNameValueCollection& formCollection) Microsoft.Exchange.Clients.Owa.Core.FBASingleSignOnFilterChain.SimulateBasicAuthenticationHeader(HttpContext httpContext) Microsoft.Exchange.Clients.Owa.Core.FBASingleSignOnFilterChain.FilterRequest(Object source, EventArgs e, RequestEventType eventType) Microsoft.Exchange.Clients.Owa.Core.RequestFilterChain.ExecuteRequestFilterChain(Object source, EventArgs e, RequestEventType eventType) Microsoft.Exchange.Clients.Owa.Core.OwaRequestEventInspector.OnBeginRequest(Object sender, EventArgs e, Boolean& stopExecution) Microsoft.Exchange.Clients.Owa.Core.OwaModule.OnBeginRequest(Object sender, EventArgs e) System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Hi, >>Request >>Url:http://mail.muskogeeonline.org:80/owa/auth.owa >>User host address:192.168.66.52 >>OWA version:14.1.218.13 Why the URL is “HTTP” not “HTTPS”? Of course, it seems something wrong else. Are you able to open the virtual directory on CAS with this URL: https://localhost/exchange If you can, I think TWHarrington is correct. You had better verify your redirection settings. Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

even with https i get this Request Url: https://mail.muskogeeonline.org:443/owa/auth.owa User host address: 74.197.148.216 OWA version: 14.1.218.13 Exception Exception type: System.MissingMethodException Exception message: Method not found: 'Void Microsoft.Exchange.Common.SecureArray`1.set_ArrayValue(!0[])'. Call stack Microsoft.Exchange.Clients.Owa.Core.SecureHtmlFormReader.TryReadSecureFormData(SecureNameValueCollection& formCollection) Microsoft.Exchange.Clients.Owa.Core.FBASingleSignOnFilterChain.SimulateBasicAuthenticationHeader(HttpContext httpContext) Microsoft.Exchange.Clients.Owa.Core.FBASingleSignOnFilterChain.FilterRequest(Object source, EventArgs e, RequestEventType eventType) Microsoft.Exchange.Clients.Owa.Core.RequestFilterChain.ExecuteRequestFilterChain(Object source, EventArgs e, RequestEventType eventType) Microsoft.Exchange.Clients.Owa.Core.OwaRequestEventInspector.OnBeginRequest(Object sender, EventArgs e, Boolean& stopExecution) Microsoft.Exchange.Clients.Owa.Core.OwaModule.OnBeginRequest(Object sender, EventArgs e) System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) and i tried https://mail.muskogeeonline.org/exchange from home and it just times out. I will try it again in the morning on the local machine at work.

If you can’t log in OWA on CAS, I would like to restart IIS and try again. If it doesn’t work , I would like to run the below commands one by one: 1. Remove-OwaVirtualDirectory 2. New-OwaVirtualDirectory 3. Test-OwaConnectivityPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

I tried the above commands, the first two worked fine, but when i do the test i get this WARNING: Test user 'extest_a832a2fe29664' isn't accessible, so this cmdlet won't be able to test Client Access server connectivity. Could not find or sign in with user muskogeeonline.org\extest_a832a2fe29664. If this task is being run without credenti als, sign in as a Domain Administrator, and then run Scripts\new-TestCasConnectivityUser.ps1 to verify that the user ex ists on Mailbox server EXCHANGE.muskogeeonline.org + CategoryInfo : ObjectNotFound: (:) [Test-OwaConnectivity], CasHealthCouldN...edInfoException + FullyQualifiedErrorId : 35C9FB3B,Microsoft.Exchange.Monitoring.TestOwaConnectivity WARNING: No Client Access servers were tested.

Just bumping this to hopefully get some more help.

Please ignore it temporary. After you create OWA virtual, did you configure internal URL for the virtual directory. For example, Internal URL: https://mail.muskogeeonlien.org/owa then try to log in OWA via the following URLs on CAS. https://localhost/owa https://mail.muskogeeonlien.org/owa Are you able to log in OWA? Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

No, it still produces the same error. Request Url: https://mail.muskogeeonline.org:443/owa/auth.owa User host address: 74.197.148.216 OWA version: 14.1.218.13 Exception Exception type: System.MissingMethodException Exception message: Method not found: 'Void Microsoft.Exchange.Common.SecureArray`1.set_ArrayValue(!0[])'. Call stack Microsoft.Exchange.Clients.Owa.Core.SecureHtmlFormReader.TryReadSecureFormData(SecureNameValueCollection& formCollection) Microsoft.Exchange.Clients.Owa.Core.FBASingleSignOnFilterChain.SimulateBasicAuthenticationHeader(HttpContext httpContext) Microsoft.Exchange.Clients.Owa.Core.FBASingleSignOnFilterChain.FilterRequest(Object source, EventArgs e, RequestEventType eventType) Microsoft.Exchange.Clients.Owa.Core.RequestFilterChain.ExecuteRequestFilterChain(Object source, EventArgs e, RequestEventType eventType) Microsoft.Exchange.Clients.Owa.Core.OwaRequestEventInspector.OnBeginRequest(Object sender, EventArgs e, Boolean& stopExecution) Microsoft.Exchange.Clients.Owa.Core.OwaModule.OnBeginRequest(Object sender, EventArgs e) System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)