I have a system where the LFDS AD Sync seems to be failing as we have not had new users brought in for a while now. In Event Viewer\Laserfiche\Directory Service\Server\Operational trace I am seeing this error message multiple times per minute. I don't know if it is related or not, but thought it might be.

Log Name:      Laserfiche-Directory Service-Server/Operational
Source:        Laserfiche-Directory Service-Server
Date:          7/27/2026 8:36:53 AM
Event ID:      2
Task Category: None
Level:         Error
Keywords:      
User:          XXXX
Computer:      XXXX
Description:
System.ServiceModel.FaultException`1[Laserfiche.LicenseManager.LMFault]: Exception of type 'CoreLibrary.TrusteeNotFoundException' was thrown. (Fault Detail is equal to Laserfiche.LicenseManager.LMFault).

Type:
System.ServiceModel.FaultException`1[Laserfiche.LicenseManager.LMFault]

Stack Trace:
   at Laserfiche.LicenseManager.LicenseCacheEntry.GetSidNameUse(String name, String organizationName)
   at Laserfiche.LicenseManager.LicenseManagerService.LookupTrusteeName(LicenseManagerServiceCallArgs _args)
   at Laserfiche.LicenseManager.LicenseManagerService.DispatchFunction(LicenseManagerServiceCall func, LicenseManagerServiceCallArgs args)
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Laserfiche-Directory Service-Server" Guid="XXXX" />
    <EventID>2</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x2000000000000000</Keywords>
    <TimeCreated SystemTime="2026-07-27T12:36:53.148039400Z" />
    <EventRecordID>719803</EventRecordID>
    <Correlation />
    <Execution ProcessID="4256" ThreadID="196" />
    <Channel>Laserfiche-Directory Service-Server/Operational</Channel>
    <Computer>XXXX</Computer>
    <Security UserID="XXXX" />
  </System>
  <EventData>
    <Data Name="Message">System.ServiceModel.FaultException`1[Laserfiche.LicenseManager.LMFault]: Exception of type 'CoreLibrary.TrusteeNotFoundException' was thrown. (Fault Detail is equal to Laserfiche.LicenseManager.LMFault).

Type:
System.ServiceModel.FaultException`1[Laserfiche.LicenseManager.LMFault]

Stack Trace:
   at Laserfiche.LicenseManager.LicenseCacheEntry.GetSidNameUse(String name, String organizationName)
   at Laserfiche.LicenseManager.LicenseManagerService.LookupTrusteeName(LicenseManagerServiceCallArgs _args)
   at Laserfiche.LicenseManager.LicenseManagerService.DispatchFunction(LicenseManagerServiceCall func, LicenseManagerServiceCallArgs args)</Data>
  </EventData>
</Event>

I didn't see any other posts on Answers about this error. Has anyone seen this before or know how to troubleshoot it?

LFDS version 12.0.2511.289