Microsoft has released security updates for vulnerabilities found in:
Exchange Server 2013
Exchange Server 2016
Exchange Server 2019
These updates are available for the following specific...
Updated May 04, 2021
Version 8.0
Blog Post
Hello, after 2016 Installation from CU 18 to CU20 that we can install KB5001779 completely broken all services.
We have no idea to fix this tried many nothing works. 😞
We get following error on powershell. (see blow)
Also in eventvwr:
many ASP.NET eventID 1310 for all different virtuall directories (ECP, EWS,OAB, ........) e.g.
Application information:
Application domain: /LM/W3SVC/1/ROOT/EWS-82-132630328195781290
Trust level: Full
Application Virtual Path: /EWS
Application Path: C:\Program Files\Microsoft\Exchange Server\V15\FrontEnd\HttpProxy\EWS\
Machine name: MS108
Process information:
Process ID: 9784
Process name: w3wp.exe
Account name: NT AUTHORITY\SYSTEM
Exception information:
Exception type: ConfigurationErrorsException
Exception message: Could not load file or assembly 'Microsoft.Exchange.Data.Directory, Version=15.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. (C:\Program Files\Microsoft\Exchange Server\V15\FrontEnd\HttpProxy\EWS\web.config line 65)
New-PSSession : [ms108.xxxxx] Connecting to remote server ms108.xxxxxx failed with the following error
message : The WinRM client cannot process the request. It cannot determine the content type of the HTTP response from
the destination computer. The content type is absent or invalid. For more information, see the
about_Remote_Troubleshooting Help topic.
At line:1 char:1
+ New-PSSession -ConnectionURI "$connectionUri" -ConfigurationName Microsoft.Excha ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : OpenError: (System.Manageme....RemoteRunspace:RemoteRunspace) [New-PSSession], PSRemotin
gTransportException
+ FullyQualifiedErrorId : -2144108297,PSSessionOpenFailed