When exiting the Client Manager that set up to use the directory service, the following error is output to Windows Event Viewer.
--- Event Log contents ---
Log Name: Application
Source: Application Error
Date: 2018/10/04 16:51:59
Event ID: 1000
Task Category: (100)
Faulting application name: IEFCMN.EXE, version: 188.8.131.5270, time stamp: 0x5b27e230
Faulting module name: ucrtbase.dll, version: 10.0.14393.0, time stamp: 0x57898db2
Exception code: 0xc0000409
Fault offset: 0x00087fb2
Faulting process id: 0x798
Faulting application start time: 0x01d45bb71ea5bb84
Faulting application path: D:\CA\GEN\IEFCMN.EXE
Faulting module path: C:\Windows\System32\ucrtbase.dll
Report Id: d8d71b41-7cdf-4113-a485-078a5f9e6a23
Faulting package full name:
Faulting package-relative application ID:
The reproduction procedure is as follows.
1. Start Client Manager
2. Select [File] - [Setup]
3. Specify "Dir.Svc.DLL" and "Dir.Svc.InputFile" and click the [OK] button
4. Select [File] - [Save]
5. Close the Client Manager once
6. Start the Client Manager again
7. Exit the Client Manager as it is
8. The above error is output to Windows Event Viewer
If the directory service is not used (that is, "Dir.Svc.DLL" is not specified in the above step 3), no error is output to the event viewer.
Support also recreated similar Event Viewer error in-house on various machines with different versions of ucrtbase.dll. On some tests a dialog box "Client manager has stopped working" was also displayed on exit. After applying Windows updates which updated the version of that file the problem was resolved. So the error appears to be related to the version of ucrtbase.dll.
Gen 8.6 Client Manager
The problem was resolved by Windows patch KB4284833 which updated ucrtbase.dll to 14393.2339.
It is not possible to prove that the version of the failing module ucrtbase.dll is the solution to this error, but from the patch install the error is resolved by updating the file.