Today we are announcing the availability of Cumulative Updates (CUs) for Exchange Server 2016 and Exchange Server 2019. These CUs include fixes for customer reported issues along with all previously ...
Updated Apr 21, 2022
Version 9.0
Blog Post
The_Exchange_Team When trying to update to CU12 or CU23 I seem to be running into this error a lot (on different Exchange servers)
Mailbox role: Client Access Front End service
The following error was generated when "$error.Clear();
set-InstallPathInAppConfig -ConfigFileRelativePath "FrontEnd\HttpProxy\oab" -ConfigFileName web.config" was run: "System.UnauthorizedAccessException: Access to the path 'C:\Program Files\Microsoft\Exchange Server\V15\FrontEnd\HttpProxy\oab\web.config' is denied.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.StreamWriter.CreateFile(String path, Boolean append, Boolean checkHost)
at System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding, Int32 bufferSize, Boolean checkHost)
at System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding)
at Microsoft.Exchange.Management.SetInstallPathInAppConfig.InternalProcessRecord()
at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__91_1()
at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)
at Microsoft.Exchange.Configuration.Tasks.Task.ProcessTaskStage(TaskStage taskStage, Action initFunc, Action mainFunc, Action completeFunc)
at Microsoft.Exchange.Configuration.Tasks.Task.ProcessRecord()
at System.Management.Automation.CommandProcessor.ProcessRecord()".
I am running the setup as a domain administrator so I'm unsure why I would be getting an UnauthorizedAccessException
Most of the time, when I re-run and a incomplete installation is detected, it completes, however some times it does not.... Any ideas?