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Released: 2023 H1 Cumulative Update for Exchange Server

The_Exchange_Team's avatar
The_Exchange_Team
Platinum Contributor
May 03, 2023
Today we are announcing the availability of the 2023 H1 Cumulative Update (CU) for Exchange Server 2019 (aka CU13). CU13 includes fixes for customer reported issues along with all previously released...
Updated May 09, 2023
Version 3.0
announcements
exchange 2019
on premises
setup
Hasenbraten24's avatar
Hasenbraten24
Copper Contributor
Jun 28, 2023

The_Exchange_Team After applying CU13 on our Ex2019 I can not access OWA, ECP, Powershell....

Also Outlook an Mobile Devices have no access to sync Mails.

 

Connection via POP&IMAP is working. As far as I can see, Mails are delivered to the Mailboxes.

 

The error I got after login:

[TypeLoadException: Der Typ "Microsoft.Exchange.Security.Authentication.FederatedAuthService.BasicAuthBlockStatus" in der Assembly "Microsoft.Exchange.Security, Version=15.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" konnte nicht geladen werden.]
   Microsoft.Exchange.HttpProxy.ProxyModule.IsLegacyAuthAllowed(HttpApplication httpApplication) +0
   Microsoft.Exchange.HttpProxy.ProxyModule.OnPostAuthenticateInternal(HttpApplication httpApplication) +83
   Microsoft.Exchange.Common.IL.ILUtil.DoTryFilterCatch(Action tryDelegate, Func`2 filterDelegate, Action`1 catchDelegate) +35
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +142
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +75
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +93

 

Windows Eventlog Errors:

1309 ASP.NET 4.0.30319.0 Event message: Es ist eine unbehandelte Ausnahme aufgetreten. 

1003 MSExchange Front End HTTP Proxy Event message: [Mapi] An internal server error occurred. The unhandled exception was: System.TypeLoadException: Der Typ "Microsoft.Exchange.Security.Authentication.FederatedAuthService.BasicAuthBlockStatus" in der Assembly "Microsoft.Exchange.Security, Version=15.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" konnte nicht geladen werden.
bei Microsoft.Exchange.HttpProxy.ProxyModule.IsLegacyAuthAllowed(HttpApplication httpApplication)
bei Microsoft.Exchange.HttpProxy.ProxyModule.OnPostAuthenticateInternal(HttpApplication httpApplication)
bei Microsoft.Exchange.Common.IL.ILUtil.DoTryFilterCatch(Action tryDelegate, Func`2 filterDelegate, Action`1 catchDelegate)

 

The OAuth Certificate is not outdated.

 

I have no Idea, what I can do to get back access to OWA/ECP.

 

Do you have an?

 

Kind Regards

Daniel Schwendner