# Exchange Server Dienste prüfen
Get-Service | Where {$_.DisplayName -Like “*Exchange*”} | Format-Table DisplayName, Name, Status
Get-Service *MSExchange*
Test-ServiceHealth

# MAPI Test
Test-MAPIConnectivity -Server SRVEX
Get-MailboxDatabase | Test-MAPIConnectivity

# Replikation überprüfen
Get-DatabaseAvailabilityGroup | Select -ExpandProperty:Servers | Test-ReplicationHealth

# Prüfen ob alle Komponenten aktiv sind
Get-ServerComponentState -Identity SRVEX | select @{N=’Exchange’;E={SRVEX}}, Component,State

# Zertifikatproblem speziell bei diesem SU

ASSERT: HMACProvider.GetCertificates:protectionCertificates.Length<1

Probleme mit dem Server Auth Zertifikat (OAuth) können wie folgt gelöst werden.
Zum Beispiel bei Event-IDs: 1003, 1309, 2005

Die vollständige Fehlermeldung zu ASSERT: HMACProvider lautet:

ASSERT: HMACProvider.GetCertificates:protectionCertificates.Length<1
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: Microsoft.Exchange.Diagnostics.ExAssertException: ASSERT: HMACProvider.GetCertificates:protectionCertificates.Length<1

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:

[ExAssertException: ASSERT: HMACProvider.GetCertificates:protectionCertificates.Length<1] Microsoft.Exchange.Diagnostics.ExAssert.AssertInternal(String formatString, Object[] parameters) +235
Microsoft.Exchange.Diagnostics.ExAssert.RetailAssert(Boolean condition, String formatString, T1 parameter1, T2 parameter2) +90
Microsoft.Exchange.Clients.Common.HmacProvider.GetCertificates() +359
Microsoft.Exchange.Clients.Common.HmacProvider.GetHmacProvider() +140
Microsoft.Exchange.Clients.Common.HmacProvider.ComputeHmac(Byte[][] messageArrays) +14
Microsoft.Exchange.HttpProxy.FbaModule.SetCadataCookies(HttpApplication httpApplication) +1032
Microsoft.Exchange.HttpProxy.FbaFormPostProxyRequestHandler.HandleFbaFormPost(
BackEndServer backEndServer) +3581
Microsoft.Exchange.HttpProxy.FbaFormPostProxyRequestHandler.ShouldContinueProxy() +20
Microsoft.Exchange.HttpProxy.ProxyRequestHandler.BeginProxyRequestOrRecalculate() +257
Microsoft.Exchange.HttpProxy.ProxyRequestHandler.InternalOnCalculate
TargetBackEndCompleted(TargetCalculationCallbackBeacon beacon) +1528
Microsoft.Exchange.HttpProxy.<>c__DisplayClass280_0.<OnCalculateTargetBackEndCompleted>b__0() +303
Microsoft.Exchange.Common.IL.ILUtil.DoTryFilterCatch(Action tryDelegate, Func`2 filterDelegate, Action`1 catchDelegate) +35
Microsoft.Exchange.HttpProxy.ProxyRequestHandler.CallThreadEntranceMethod(Action method) +59

[AggregateException: One or more errors occurred.] Microsoft.Exchange.HttpProxy.ProxyRequestHandler.EndProcessRequest(IAsyncResult result) +413
System.Web.CallHandlerExecutionStep.InvokeEndHandler(IAsyncResult ar) +231
System.Web.CallHandlerExecutionStep.OnAsyncHandlerCompletion(IAsyncResult ar) +172——————————————————————————–
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4330.0

Nicht vergessen den AV-Schutz zu prüfen!