# No agents after upgrade to 2745
**URL:** https://www.finalbuilder.com/forums/t/no-agents-after-upgrade-to-2745/5875
**Category:** Bugs
**Created:** [December 6, 2013, 12:45pm UTC](https://www.finalbuilder.com/forums/t/no-agents-after-upgrade-to-2745/5875 "2013-12-06T12:45:44Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@christian.leh](https://www.finalbuilder.com/forums/u/christian.leh)
#### Post date: [December 6, 2013, 12:45pm UTC](https://www.finalbuilder.com/forums/t/no-agents-after-upgrade-to-2745/5875/1 "2013-12-06T12:45:44Z")
if i go to administration / agents, i get the following error message:
Failed to connect to the required application service, received error 'There was no endpoint listening at net.pipe://localhost/ContinuaCI/IAgentRegistrationService that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details.'. Please make sure that the machine is online and that the port has been excluded in any firewall configurations.
No build is running anymore. "Stage awaiting agent". Event log is empty (windows + continua). Service were restarted with errors.
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### Author:  [@christian.leh](https://www.finalbuilder.com/forums/u/christian.leh)
#### Post date: [December 6, 2013, 12:47pm UTC](https://www.finalbuilder.com/forums/t/no-agents-after-upgrade-to-2745/5875/2 "2013-12-06T12:47:15Z")
ok. as i wrote this. it seems to work again. hell ya!
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### Author:  [@christian.leh](https://www.finalbuilder.com/forums/u/christian.leh)
#### Post date: [December 6, 2013, 1:01am UTC](https://www.finalbuilder.com/forums/t/no-agents-after-upgrade-to-2745/5875/3 "2013-12-06T01:01:23Z")
ok, after the half of the stuff has run, the following happend:
[code]Exception: ServiceException Message: An unexpected error occurred:The open operation did not complete within the allotted timeout of 00:01:00. The time allotted to this operation may have been a portion of a longer timeout. Stack Trace: at Continua.Web.ContinuaController.OnActionExecuting(ActionExecutingContext filterContext) in s:\CI\_WS\Ws\25817\Source\CT\_Source\Source\Continua.Web\Controllers\ContinuaController.cs:line 576 at System.Web.Mvc.Async.AsyncControllerActionInvoker.InvokeActionMethodFilterAsynchronously(IActionFilter filter, ActionExecutingContext preContext, Func`1 nextInChain) at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c __DisplayClass37.<BeginInvokeActionMethodWithFilters>b__ 31(AsyncCallback asyncCallback, Object asyncState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TResult](AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TResult](AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag) at System.Web.Mvc.Async.AsyncControllerActionInvoker.\<\>c\_\_DisplayClass25.\b\_\_1e(AsyncCallback asyncCallback, Object asyncState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TResult](AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TResult](AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag) at System.Web.Mvc.Controller.<>c __DisplayClass1d.<BeginExecuteCore>b__ 17(AsyncCallback asyncCallback, Object asyncState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TResult](AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) at System.Web.Mvc.Controller.BeginExecuteCore(AsyncCallback callback, Object state) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TResult](AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate endDelegate, Object tag) at System.Web.Mvc.Controller.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) at System.Web.Mvc.MvcHandler.<>c __DisplayClass8.<BeginProcessRequest>b__ 2(AsyncCallback asyncCallback, Object asyncState) at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin[TResult](AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate`1 endDelegate, Object tag, Int32 timeout) at System.Web.Mvc.Async.AsyncResultWrapper.Begin(AsyncCallback callback, Object state, BeginInvokeDelegate beginDelegate, EndInvokeDelegate endDelegate, Object tag) at System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) [/code]
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### Author:  [@christian.leh](https://www.finalbuilder.com/forums/u/christian.leh)
#### Post date: [December 6, 2013, 2:37am UTC](https://www.finalbuilder.com/forums/t/no-agents-after-upgrade-to-2745/5875/4 "2013-12-06T02:37:44Z")
ok, we restored a backup because the whole system hangs up after some minutes. maybe too much agent logging information
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### Author:  [@Sparky](https://www.finalbuilder.com/forums/u/Sparky)
#### Post date: [December 8, 2013, 11:49am UTC](https://www.finalbuilder.com/forums/t/no-agents-after-upgrade-to-2745/5875/5 "2013-12-08T11:49:42Z")
Hi Christian,
The exception you posted is a generic web application exception - did this occur on a specific page? Are there any other errors in the event log?
We've been using this version on our build server for a few days now without issue so would need some further information to reproduce. Can you identify the steps taken (or build actions running) before the error occurs and ideally send us a debug log?
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### Author:  [@christian.leh](https://www.finalbuilder.com/forums/u/christian.leh)
#### Post date: [December 9, 2013, 8:29am UTC](https://www.finalbuilder.com/forums/t/no-agents-after-upgrade-to-2745/5875/6 "2013-12-09T08:29:53Z")
as i write in the first post, there are NO errors in the event log. i know that this exception is a generic WCF exception but do not have anything else (as i said).
today we are going to create a virtual machine for testing the issue again.
tell me what i should do that helps you in detail (settings in config files etc.).