Microsoft has resolved a recognized subject that triggers Cluster service and VM restart points after putting in July’s Home windows Server 2019 safety updates.
The corporate acknowledged the bug in a non-public advisory seen by BleepingComputer three weeks in the past and requested companies to succeed in out for help to mitigate the cluster points.
As Redmond defined on the time, the Cluster service (a system part important to cluster operation) might fail to operate appropriately after putting in the KB5062557 replace launched on July eighth, whereas some nodes may also fail when trying to rejoin their cluster and triggering errors on programs with the BitLocker Home windows safety function enabled on Cluster Shared Volumes (CSV) drives.
“After putting in the July Home windows safety replace [..], the Cluster Service on Home windows Server 2019 may repeatedly cease and restart, inflicting nodes to fail to rejoin the cluster or enter quarantine states, digital machines to expertise a number of restarts, and frequent Occasion ID 7031 errors inside occasion logs,” Microsoft mentioned.
“When you need assistance to handle this subject in your group and apply a mitigation, please contact Microsoft’s Help for enterprise.”
Microsoft has now fastened this recognized subject within the August 2025 KB5063877 cumulative replace for Home windows Server 2019, which additionally contains different important enhancements and bug fixes.
To put in it on affected programs, admins should first deploy the KB5005112 servicing stack replace after which set up KB5063877 through Home windows Replace, the Microsoft Replace Catalog, or Home windows Server Replace Providers (WSUS).
On Wednesday, Microsoft resolved a widespread WSUS subject that prevented organizations from deploying the August 2025 KB5063878 cumulative replace on Home windows 11 24H2 units.
Final month, it additionally addressed one other WSUS bug that blocked organizations from deploying the most recent Home windows updates as a result of Microsoft Replace sync issues.
Moreover, the July 2024 cumulative updates fastened a difficulty triggered by the June 2025 safety updates, which brought about the DHCP service to freeze on some Home windows Server programs.
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