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On April 14th 2026, Microsoft released KB updates that conflict with Netwrix Threat Prevention (formerly StealthINTERCEPT) agents.
If these KBs are applied before updating the agents, certain Kerberos Authentication and LDAP Bind events will no longer be captured or blocked.
Netwrix recommends delaying the deployment of these KBs if your organization relies on these event types. The Netwrix development and QA teams are working on updated agents compatible with these KBs and will send another notice when they are available.
Important Details
If your organization does not use Netwrix Threat Prevention (formerly StealthINTERCEPT) for the following activity event collection, or such events are not deemed important, you may elect to deploy the following Microsoft KBs in advance of updated Netwrix Threat Prevention (formerly StealthINTERCEPT) agents.
No other aspect of Netwrix Threat Prevention (formerly StealthINTERCEPT) operation is impacted by the April 14th 2026 KBs beyond what is described below. There is no adverse impact to domain controllers if the KBs are deployed without updating the agents.
Event Types Affected:
- Kerberos Authentication activity
- LDAP Bind activity
Severity:
MEDIUM
Affected Products:
- Netwrix Threat Prevention (formerly StealthINTERCEPT) for Active Directory
- Netwrix Threat Manager (formerly StealthDEFEND) for Active Directory
Affected Systems:
- Windows Server 2025 (for Active Directory)
- Windows Server 2022 (for Active Directory)
- Windows Server 2019 (for Active Directory)
- Windows Server 2016 (for Active Directory)
Affected Microsoft KBs:
- Windows Server 2025 KB5082063
- Windows Server 2022 KB5082142
- Windows Server 2019 KB5082123
- Windows Server 2016 KB5082198
Impact:
Functional:
- Windows Server 2025 (KB5082063): Netwrix Threat Prevention agents will lose the ability to capture or block Kerberos authentication activity
- Log: resolving HandleTGSRequest failed
- Log: Couldn’t resolve I_RenewTicket
- Windows Server 2022 (KB5082142): Netwrix Threat Prevention agents will lose the ability to capture or block Kerberos authentication activity
- Log: Couldn’t resolve KdcGetSidsFromTgt
- Windows Server 2019 (KB5082123): Netwrix Threat Prevention agents will lose the ability to capture or block Kerberos authentication activity and capture LDAP Bind activity
- Log: Couldn’t resolve I_RenewTicket
- Log: Couldn’t resolve KdcGetSidsFromTgt
- Log: Couldn’t resolve LDAP_CONN::BindRequest
- Windows Server 2016 (KB5082198): Netwrix Threat Prevention agents will lose the ability to capture or block Kerberos authentication activity
- Log: Couldn’t resolve I_RenewTicket
- Log: Couldn’t resolve KdcGetSidsFromTgt
- Log: Couldn’t resolve I_GetASTicket
Stability:
No stability impact on any server platforms or domain controllers
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