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Microsoft October 2026 Windows Server Updates Cause Issues in Exchange Server Environments
Posted inMicrosoft Exchange Server

Microsoft October 2026 Windows Server Updates Cause Issues in Exchange Server Environments

Microsoft has confirmed that the October 2026 Windows Server security updates are causing email communication and user access issues in certain Microsoft Exchange Server environments. Following the installation of these…
Posted by Veli Kadir KOZAN October 20, 2026
Microsoft Ekim 2026 Windows Server Güncellemeleri Exchange Server Ortamlarında Sorunlara Neden Oluyor
Posted inMicrosoft Exchange Server

Microsoft Ekim 2026 Windows Server Güncellemeleri Exchange Server Ortamlarında Sorunlara Neden Oluyor

Microsoft tarafından Ekim 2026 döneminde yayımlanan Windows Server güvenlik güncellemelerinin, bazı Exchange Server ortamlarında e-posta iletişimini ve kullanıcı erişimini olumsuz etkilediği bildirildi. Güncellemelerin ardından özellikle Outlook on the Web (OWA)…
Posted by Veli Kadir KOZAN October 20, 2026
[EN] Why Does Always On Fail Even When Everything Looks Healthy? A Production Case Involving WSFC Heartbeats and Lease Behavior
Posted inMicrosoft SQL Server

[EN] Why Does Always On Fail Even When Everything Looks Healthy? A Production Case Involving WSFC Heartbeats and Lease Behavior

In high-availability environments, the most misleading incidents are not always the ones where a server completely goes offline. Sometimes every server is reachable, services are running, resource utilization looks normal,…
Posted by Veli Kadir KOZAN September 11, 2026
Always On Çalışıyor Görünürken Neden Kopar? WSFC Heartbeat ve Lease Katmanında Bir Üretim Vakası
Posted inMicrosoft SQL Server

Always On Çalışıyor Görünürken Neden Kopar? WSFC Heartbeat ve Lease Katmanında Bir Üretim Vakası

Yüksek erişilebilirlik altyapılarında en yanıltıcı arızalar, sistemin tamamen erişilemez hale geldiği durumlar değildir. Bazen bütün sunucular erişilebilir görünür, servisler çalışır, kaynak tüketimleri normal seviyededir ve temel bağlantı testleri herhangi bir…
Posted by Veli Kadir KOZAN September 11, 2026
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  • Microsoft October 2026 Windows Server Updates Cause Issues in Exchange Server Environments
  • Microsoft Ekim 2026 Windows Server Güncellemeleri Exchange Server Ortamlarında Sorunlara Neden Oluyor
  • How to Resolve the “HPE OmniStack Host Lost Connection to the Eventmgr” Error in HPE SimpliVity
  • HPE SimpliVity OmniStack Host Lost Connection to the Eventmgr Hatası ve Çözümü
  • VMware ESXi’de HBA Link Down Event Hatası: Fibre Channel Bağlantı Sorunları ve Çözüm Yöntemleri
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