Microsoft’s August cumulative update for Windows Server 2019, KB5063877 (released August 12, 2025), finally closes out a high‑visibility clustering regression introduced by the July rollout: a Cluster Service failure that caused repeated service restarts, node quarantines and virtual machine...
Microsoft has released an update that resolves a severe clustering regression in Windows Server 2019 introduced by July’s cumulative security rollup, closing a weeks‑long incident that left some failover clusters unstable and virtual machines repeatedly restarting. (support.microsoft.com)...
bitlocker
cluster service
cluster shared volumes
csv
enterprise it
event id 7031
failover clustering
it support
kb5062557
kb5063877
patch management
patch rollout
s2d
servicing stack update
ssu
windows server 2019
windows update
wsus