This notice highlights recent Microsoft KB conflicts that impact some event capture on Windows Server 2012 R2, 2016, 2022, and 2025.
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On September 8, Microsoft released KB updates that conflict with the Active Directory (AD) Module in the Netwrix Activity Monitor product.
If these KBs are applied before updating the AD Module, certain Kerberos, AD Replication, NTLM, and RDP authentication (JumpBox cases) events will no longer be captured.
Netwrix recommends delaying deployment of these KBs if your organization relies on these event types. The Netwrix development and QA teams are working on an updated AD Module compatible with these KBs and will send another notice when it is available.
Important Details
If your organization does not use Netwrix Activity Monitor for the following Active Directory activity event collection, or such events are not deemed important, you may elect to deploy the following Microsoft KBs in advance of the updated AD Module.
No other aspect of Activity Monitor operation is impacted by the September 8, 2026, KBs beyond what is described below. There is no adverse impact to domain controllers if the KBs are deployed without updating the AD Module.
Event Types Affected:
Kerberos, AD Replication, NTLM, RDP authentication (JumpBox cases)
Severity:
Medium
Affected Product: Netwrix Activity Monitor for Active Directory
Affected Systems:
- Windows Server 2025
- Windows Server 2022
- Windows Server 2016
- Windows Server 2012 R2
Affected Microsoft KBs:
- KB5122871
- KB5122882
- KB5123099
- KB5123066
Impact:
Functional:
Windows Server 2025 / KB5122871: Kerberos events will not be collected
Log messages observed:
Couldn’t resolve I_GetASTicket
Windows Server 2022 / KB5122882: Kerberos, AD Replication events will not be collected
Log messages observed:
resolving KdcVerifyKdcRequest failed
Couldn’t resolve IDL_DRSGetNCChanges
Windows Server 2016 / KB5123099: Kerberos, AD Replication events will not be collected
Log messages observed:
Couldn’t resolve I_RenewTicket
Couldn’t resolve I_GetASTicket
Couldn’t resolve IDL_DRSGetNCChanges
Windows Server 2012 R2 / KB5123066: NTLM, RDP authentication (JumpBox cases) events will not be collected
Log messages observed:
resolving NlpLogonSamLogon (New) failed
resolving CConnectionEx::InitializeClientData (2 param) failed
Stability:
No stability impact on any server platforms or domain controllers
Need help with this update?
There are many different ways to get help with our products!
| Situation | Action |
|---|---|
| If you feel the product is broken and not working as intended… | Contact Support |
| If you have a question you’d like to ask other experts… | Create a discussion in the community: Activity Monitor > Discussions & Questions |
| If you have a feature request… | Let our product team know directly: Activity Monitor > Ideas |
| If you have something cool to show… | Show everyone what you built: Activity Monitor > Show & Tell |
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