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SBS 2011 RWA

Posted on 2014-01-21
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Last Modified: 2016-01-18
When trying to use Small Business Server 2011 Remote Web Access we get this error, if I reboot the SBS server it will start working again for a day or so. Any suggestions on where to start troubleshooting?

"An unexpected error occurred, Please try again. If the problem continues, contact the person who manages your server.
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Question by:jsarinana
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by:Chris Millard
Chris Millard earned 167 total points
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The first thing to look at are the event logs on the server. See if there are any errors or warnings.
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Jeffrey Kane - TechSoEasy earned 167 total points
ID: 39799160
You didn't state when exactly that error is occurring (ie, what feature of RWA causes it to occur), but I suspect it may be when accessing a workstation remotely?

The answer to this problem is well documented:
http://blogs.technet.com/b/sbs/archive/2014/01/13/troubleshooting-an-unexpected-error-occurred-message-when-using-remote-web-access-to-connect-to-computers.aspx

Jeff
TechSoEasy
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by:Jeffrey Kane - TechSoEasy
ID: 39799163
Oh, and if it's not when accessing a computer remotely, there are a few other causes:
http://blogs.technet.com/b/sbs/archive/2009/06/19/common-remote-web-workplace-rww-connect-to-a-computer-issues-in-sbs-2008.aspx

(RWA is essentially the same in SBS 2008 and 2011, so the article applies)

Jeff
TechSoEasy
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If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

 
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by:jsarinana
ID: 39815313
Ok, I finely found sometime to get back to this, sorry for the long delay

In Event Viewer I see Event ID 3 WebHost
Here is what it details, please advice:

System.ServiceModel.Activation.HostedHttpRequestAsyncResult/27625033
   System.ServiceModel.ServiceActivationException: The service '/Remote/BuiltIns/RDP/RemoteDesktopWebService.svc' cannot be activated due to an exception during compilation. The exception message is: Memory gates checking failed because the free memory (524255232 bytes) is less than 5% of total memory. As a result, the service will not be available for incoming requests. To resolve this, either reduce the load on the machine or adjust the value of minFreeMemoryPercentageToActivateService on the serviceHostingEnvironment config element.. ---> System.InsufficientMemoryException: Memory gates checking failed because the free memory (524255232 bytes) is less than 5% of total memory. As a result, the service will not be available for incoming requests. To resolve this, either reduce the load on the machine or adjust the value of minFreeMemoryPercentageToActivateService on the serviceHostingEnvironment config element. at System.ServiceModel.Activation.ServiceMemoryGates.Check(Int32 minFreeMemoryPercentage, Boolean throwOnLowMemory, UInt64& availableMemoryBytes) at System.ServiceModel.ServiceHostingEnvironment.HostingManager.CheckMemoryCloseIdleServices(EventTraceActivity eventTraceActivity) at System.ServiceModel.ServiceHostingEnvironment.HostingManager.EnsureServiceAvailable(String normalizedVirtualPath, EventTraceActivity eventTraceActivity) --- End of inner exception stack trace --- at System.Runtime.AsyncResult.End[TAsyncResult](IAsyncResult result) at System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult result)
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by:blutonetech
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by:Jeffrey Kane - TechSoEasy
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Funny, that's exactly what I had originally posted!

Jeff
TechSoEasy
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by:jsarinana
ID: 39868984
I did this chanage, was forwarding ports 4125 and 3389 to SBS
I now also included ports TCP 987 and TCP 443
so far so good
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by:Jeffrey Kane - TechSoEasy
ID: 39869029
So, next time you close out a question -- please don't split points when someone just repeats what was already said.

Thanks.
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by:pbaee
ID: 41418424
Tried this fix on my system and it didn't help. I did an iisreset /restart and it fixed the issue...for now.
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