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# citrix-wems
Slackbot
11/03/2023, 2:09 AMThis message was deleted.
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Nick Pylarinos
11/03/2023, 3:04 AMplenty of these VuemAgentServiceConfigurationHelper.TrySendFallbackAgentNotificationMessages() : Cannot send fallback agent notification messages. Exception: The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state.
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James Kindon
11/03/2023, 4:57 AM@Anthony Shi @Yan Wang ^^
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Sharp Guo
11/03/2023, 7:05 AMthis means that this agent can't connect with the broker correctly when it tries to get the notifications.
Sharp Guo
11/03/2023, 7:07 AMcould you help to share more information? in what situation when this occurs? it's better if there is the memory dump file of the wem agent service process. thanks
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Nick Pylarinos
11/03/2023, 7:08 AMThe users who are logged in are ok - any new / reconnection attempts are no good....welcome circle infinitely. Where would the dump file be on that server?
Nick Pylarinos
11/03/2023, 7:13 AMThis also happened
Nick Pylarinos
11/03/2023, 7:13 AM4250 PM Event -> GroupPolicyStore.ProcessComputerGroupPolicies() : Start processing computer group policies at 144250.426
24250 PM Event -> GroupPolicyStore.() : Using cached agent data client.
24250 PM Exception -> GroupPolicyStore.ProcessComputerGroupPolicies() : Error happened while processing computer policies. Exception: System.InvalidOperationException: Invalid agent cache data client.
at Citrix.Wem.Common.Data.Agent.Sqlite.AgentCacheDataProvider.()
at Citrix.Wem.Common.Data.Agent.Sqlite.AgentCacheDataProvider.[T](Func`1 )
at Norskale.Common.Data.Agent.Proxy.GroupPolicy.GroupPolicyStore.(IAgentBrokerHostDataProvider , Int64& )
at Norskale.Common.Data.Agent.Proxy.GroupPolicy.GroupPolicyStore.ProcessComputerGroupPolicies(IAgentBrokerHostDataProvider dataClient)
24250 PM Event -> GroupPolicyStore.ProcessComputerGroupPolicies() : Finished processing computer group policies at 144250.439
24250 PM Event -> EventTriggerManager.RefreshTriggerControllers() : No toggle enabled event trigger controller.
24250 PM Event -> ExecutableTaskController.() : ExecutableTaskFeatureToggle is: False
24250 PM Event -> CitrixOptimizerController.() : CitrixOptimizerToggle is: True
24250 PM Event -> VuemAgentServiceConfigurationHelper.DoCentralCfgReport() : Central Configuration Report:
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Sharp Guo
11/03/2023, 7:27 AMthis means that the cache file is invalid. the memory dump can be obtained from the task manager.
Sharp Guo
11/03/2023, 7:29 AMAnd how often does the error log (VuemAgentServiceConfigurationHelper.TrySendFallbackAgentNotificationMessages) generate? every second or minute?
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Nick Pylarinos
11/06/2023, 12:23 AMhmmm generating the dump might be an issue because we dont have console access
😅 1
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Sharp Guo
11/06/2023, 9:21 AMcould you help to try the "procdump -ma Citrix.Wem.Agent.Service.exe" command? https://learn.microsoft.com/en-us/sysinternals/downloads/procdump thanks!
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Nick Pylarinos
11/08/2023, 9:56 AMManaged to secure a dump of the WEM Service - I typically use WinDBG to read .dmp files - is this still the right tool ?
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Sharp Guo
11/08/2023, 10:01 AMIt's better to let us check the dump file since we have the symbols. by the way, which release do you use right now? We have enhanced the agents this year. and how long has this agent run?
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Nick Pylarinos
11/08/2023, 10:04 AMThis agent is v2209 - been in use for almost a year. The session hosts are rebooted every day. We have the DB files redirected to the persistent drive. the dmp file is 62Gb....i am trying to shrink it now...where could i send it to?
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Sharp Guo
11/08/2023, 10:23 AMSo huge. Do you have a shared driver in the cloud? if it's still too huge after shrink, you can try "procdump -mm Citrix.Wem.Agent.Service.exe" to generate the mindump file.
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