KB5134140
October 26, 2026—KB5134140 (OS Build 20348.5773) Out-of-band
Probleme cunoscute (2)
deschisă Users might be unable to sign in to OWA or send emails on Exchange Server
sursă: microsoft · link
Rezolvări:
- workaround This issue can be temporarily mitigated by modifying the registry key as described in Exchange servers may become unstable after installation of October 2026 Windows updates . The October 2026 update introduced a default limit on the amount of memory used by Endpoint Mapper when handling Endpoint Lookup calls. For workloads such as Exchange Server, the default limit of 512 simultaneous Endpoint Lookup calls might not be sufficient under heavy load. Administrators can use this registry setting to increase the maximum number of simultaneous Endpoint Lookup calls, which increases the amount of memory that Endpoint Mapper can use. Microsoft Support: An additional mitigation is available for affected devices through Microsoft Support. To apply this mitigation in your organization, please contact Microsoft Support for business . Next steps: Microsoft investigating this issue and will provide more information when it is available. · sursă
deschisă Windows Server Update Services (WSUS) does not display error details
sursă: microsoft · link
Nicio rezolvare înregistrată încă.