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