Exchange 2016 - Event ID 2 - RestDeepTestProbe/MSExchangeRestAppPool
Hi, i'm troubleshooting a problem on our exchange server 2016 infrastructure (two servers in two different domains; so not related to each other in any way). On both servers the CU 2021-04 is currently installed on these servers. The problem occurs since the exchange servers have been setup (~6 and 9 month ago), the error occurs every 2-5 minutes. The problem which occurs is logged in the Event-Manager within "Windows\Exchange\ActiveMonitoring\ProbeResult" und only logs the error "Probe result (Name=RestDeepTestProbe/MSExchangeRestAppPool)". Because the error was not very helpful i digged a bit into it (thanks to this website this was not so hard: https://www.codetwo.com/admins-blog/managed-availability-in-exchange-2013/) And so i was able to pull out these information from the deep of the event viewer: auto-ns2 : http://schemas.microsoft.com/win/2004/08/events xmlns : myNs Id : 1019177704 AssemblyPath : D:\Exchange Server\V15\Bin\Microsoft.Exchange.Monitoring.ActiveMonitoring.Local.Components.dll TypeName : Microsoft.Exchange.Monitoring.ActiveMonitoring.ActiveMonitoring.Responders.EscalateWit hWatsonQueryResponder Name : PrivateWorkingSetError.msexchangerestapppoolEscalate WorkItemVersion : [null] ServiceName : Rest.Protocol DeploymentId : 0 ExecutionLocation : [null] CreatedTime : 2021-05-28T16:15:14.0167242Z Enabled : 1 TargetPartition : [null] TargetGroup : [null] TargetResource : msexchangerestapppool TargetExtension : [null] TargetVersion : [null] RecurrenceIntervalSeconds : 300 TimeoutSeconds : 300 StartTime : 2021-05-28T16:15:24.0167242Z UpdateTime : 2021-05-28T16:15:14.0167242Z MaxRetryAttempts : 3 ExtensionAttributes : <ExtensionAttributes LoadFromResourceAttributeValue="False" WatsonProcessName="w3wp#msexchangerestapppool" QueryTimeSpan="1.00:00:00" ExceptionName="M.E.M.A.A.Responders.WatsonResponder+PrivateWorkingSetException" /> AlertMask : PrivateWorkingSetError.msexchangerestapppool/msexchangerestapppool WaitIntervalSeconds : 14400 MinimumSecondsBetweenEscalates : 14400 EscalationSubject : Process isolation: Process error message for high memory usage: msexchangerestapppool. EscalationMessage : The msexchangerestapppool process exceeded the storage failure threshold. {Monitor.StateAttribute1} {Probe.Error}. EscalationService : [null] EscalationTeam : Web Services NotificationServiceClass : 2 DailySchedulePattern : AlwaysEscalateOnMonitorChanges : 0 Endpoint : [null] CreatedById : 0 Account : [null] AlertTypeId : PrivateWorkingSetError.msexchangerestapppool TargetHealthState : 8 CorrelatedMonitorsXml : [null] ActionOnCorrelatedMonitors : 0 ResponderCategory : ProcessIsolation ThrottleGroupName : [null] ThrottlePolicyXml : [null] UploadScopeNotification : 0 SuppressEscalation : 0 Version : 0 By troubleshooting some other errors on the exchange server, these are the steps i already tried to fix the error: recycle the application "MSExchangeRestAppPool" in IIS remove all monitoring mailboxes on the exchange server and recreate them uninstall the „Exchange Web Services Managed API“ I cannot find any further information, which memory limit is set, how can i increase it or any other information, how to get this problem fixed. Thanks for any help
