Today I was trying to upgrade Exchange Server 2019 RTM to cumulative update CU 5 stopped with an error. The upgrade went up to Step 10 and errored out with the following error message.

Error:

 The following error was generated when "$error.Clear();
 Install-ExchangeCertificate -services IIS -DomainController $RoleDomainController
 if ($RoleIsDatacenter -ne $true -And $RoleIsPartnerHosted -ne $true)
 {
 Install-AuthCertificate -DomainController $RoleDomainController
 }
 " was run: "Microsoft.Exchange.Management.Clients.FormsAuthenticationMarkPathUnknownSetError: An unexpected error occurred while modifying the forms authentication settings for path /LM/W3SVC/1. The error returned was 5506.
 at Microsoft.Exchange.Configuration.Tasks.Task.ThrowError(Exception exception, ErrorCategory errorCategory, Object target, String helpUrl)
 at Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception, ErrorCategory category, Object target)
 at Microsoft.Exchange.Management.SystemConfigurationTasks.InstallExchangeCertificate.EnableForServices(X509Certificate2 cert, AllowedServices services)
 at Microsoft.Exchange.Management.SystemConfigurationTasks.InstallExchangeCertificate.InternalProcessRecord()
 at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__91_1()
 at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)". 

Solution:

To resolve this issue, I opened the Internet Information Services Manager and went to the Default website and right click and bindings option and changed the certificate from the third party one to the self-signed certificate.

Restarted the IIS using the command iisreset from the command prompt.

Restarted the Exchange CU upgrade and the upgrade completed successfully.

After the upgrade, I changed the Default website binding back third party certificate for the https binding.

Hope this would help someone.

Exchange Server Cumulative Update upgrade error on stopping Windows Management Instrumentation service. The following error shows on stopping this service.

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<p>Error:</p>
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<p>The
following error was generated when "$error.Clear(); </p>
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<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp; $RoleBinPath\ServiceControl.ps1
-Operation:DisableServices -Roles:($RoleRoles.Replace('Role','').Split(','))
-SetupScriptsDirectory:$RoleBinPath;</p>
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<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &amp; $RoleBinPath\ServiceControl.ps1
-Operation:Stop -Roles:($RoleRoles.Replace('Role','').Split(',')) -IsDatacenter:([bool]$RoleIsDatacenter)</p>
<!-- /wp:paragraph -->

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<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; " was run:
"Microsoft.Exchange.Configuration.Tasks.ServiceDidNotReachStatusException:
Service 'WinMgmt' failed to reach status 'Stopped' on this server.</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>&nbsp;&nbsp; at
Microsoft.Exchange.Configuration.Tasks.Task.ThrowError(Exception exception,
ErrorCategory errorCategory, Object target, String helpUrl)</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>&nbsp;&nbsp; at
Microsoft.Exchange.Configuration.Tasks.Task.WriteError(Exception exception,
ErrorCategory category, Object target)</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>&nbsp;&nbsp; at
Microsoft.Exchange.Management.Tasks.ManageSetupService.WaitForServiceStatus(ServiceController
serviceController, ServiceControllerStatus status, Unlimited`1 maximumWaitTime,
Boolean ignoreFailures, Boolean sendWatsonReportForHungService)</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>&nbsp;&nbsp; at
Microsoft.Exchange.Management.Tasks.ManageSetupService.StopService(ServiceController
serviceController, Boolean ignoreServiceStopTimeout, Boolean
failIfServiceNotInstalled, Unlimited`1 maximumWaitTime)</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>&nbsp;&nbsp; at
Microsoft.Exchange.Management.Tasks.ManageSetupService.StopService(String
serviceName, Boolean ignoreServiceStopTimeout, Boolean
failIfServiceNotInstalled, Unlimited`1 maximumWaitTime)</p>
<!-- /wp:paragraph -->

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<p>&nbsp;&nbsp; at
Microsoft.Exchange.Management.Tasks.StopSetupService.InternalProcessRecord()</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>&nbsp;&nbsp; at
Microsoft.Exchange.Configuration.Tasks.Task.&lt;ProcessRecord&gt;b__91_1()</p>
<!-- /wp:paragraph -->

<!-- wp:paragraph -->
<p>&nbsp;&nbsp; at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String
funcName, Action func, Boolean terminatePipelineIfFailed)".</p>
<!-- /wp:paragraph -->

Resolution

Go to Task Manager and in the Services tab find Windows Management Instrumentation Service and find the Process ID (PID) of this service process. Note down the process ID and come to details on the task Manager and kill the process. Leave the Windows Management Instrumentation Service start state to be disabled and run the Exchange Server Cumulative Update setup again either through Graphical user interface or command line and this time the error won’t come up.

I want to hear from you, if you have any questions or feedback, leave your comments below and I reply you.